Screw Press vs. Hydraulic Oil Press: Key Differences and How to Choose

Choosing between a screw oil press and a hydraulic oil press is an important decision when setting up or expanding an edible oil processing business. Although both machines can extract oil from peanuts, rapeseed, sunflower seeds, soybeans, sesame, and other common oilseeds, they differ significantly in working principles, production capacity, oil quality, and operating costs.

So, which type of oil press is more suitable for your business?

In general, screw oil presses are designed for continuous, high-volume edible oil production, while hydraulic oil presses are better suited to small-batch, low-temperature extraction, where preserving oil flavor and nutritional properties is a priority.

The right choice depends on your raw materials, target oil quality, daily processing volume, and end market. This guide compares the two types of oil presses across five key performance factors and provides a practical selection guide for different production scenarios.

1. How Do Screw and Hydraulic Oil Presses Work?

1.1 How a Screw Oil Press Works: Continuous Mechanical Extrusion

A screw oil press operates on a continuous mechanical extrusion principle. Oilseeds are fed into a hopper and enter the pressing chamber, where a rotating screw shaft progressively compresses the material. As the screw moves the material forward, the chamber volume gradually decreases, increasing pressure until oil is forced out through filter gaps in the barrel wall. The solid residue (oil cake) exits through a separate outlet, enabling truly continuous operation.

Screw presses come in several configuration tiers:

• Basic single-screw press — Entry-level continuous pressing, suitable for small workshops and startups.

• Temperature-controlled screw press — Adds electric heating rings for rapid, precise preheating and constant chamber temperature maintenance, improving oil yield consistency and reducing wear.

• Integrated screw press with vacuum filtration — Combines temperature-controlled pressing with vacuum filtration, eliminating the need for separate filtration equipment and delivering cleaner crude oil directly from the press.

1.2 How a Hydraulic Oil Press Works: High-Pressure Static Compression

A hydraulic oil press works through high-pressure static compression. Oilseeds (often pre-formed into cakes or wrapped in filter cloth) are placed inside a pressing chamber. A hydraulic cylinder then applies slow, powerful vertical pressure, squeezing oil out gradually. After each batch, the pressed cake is removed manually and the cycle repeats. This is inherently a batch production system, not continuous.

Cold-press technology is a type of pressing process, typically implemented using hydraulic pressing equipment, with the process requirement that the oil extraction temperature does not exceed 50°C. By maintaining a low-temperature environment throughout the oil extraction process, cold-press technology can preserve the natural color, flavor, and nutritional active substances of oilseeds, and is therefore widely used in premium gourmet and health food oil markets.

1.3 Screw vs. Hydraulic Oil Press: Working Principle Comparison

Feature	Screw Oil Press	Hydraulic Oil Press
Pressing method	Continuous mechanical extrusion	Batch static compression
Feeding	Automatic continuous feeding	Manual loading per batch
Discharge	Automatic cake discharge	Manual cake removal
Production mode	Continuous	Batch
Temperature range	Warm to hot (friction + optional heating)	Can operate at cold press temperatures (≤50°C)
Labor requirement	Low (automated)	Moderate (manual loading/unloading)

Understanding these fundamental differences is the first step in choosing between a continuous screw press and a hydraulic oil press for your specific oilseeds and quality targets.

2. Screw vs. Hydraulic Oil Press: Performance Comparison

2.1 Production Capacity and Scalability

Screw oil presses are engineered for continuous operation and deliver significantly higher daily throughput. Available in configurations ranging from 1.3-40 tons per 24 hours, screw presses can handle everything from small workshop batches to large-scale commercial milling. Their continuous feed-and-discharge design means they can run for extended periods with minimal interruption.

Hydraulic oil presses operate in batch mode, which inherently limits their hourly output. Depending on the model size, typical capacities range from roughly 25 to 120 kilograms per hour. While this is sufficient for small-scale or specialty production, it cannot match the volume output of a screw press running continuously. For operators processing multiple tons of oilseeds per day, the screw press is the only practical choice.

2.2 Oil Yield and Residual Oil Rate

Oil yield is perhaps the most important economic metric for any pressing operation.

• Screw presses achieve residual oil rates in the cake of ≤7.8% for standard models, with larger configurations achieving ≤7.4%. Multi-stage pressing (re-pressing the cake) can further improve overall extraction efficiency. The continuous nature of screw pressing also means less raw material is wasted per unit of output.

• Hydraulic presses deliver oil yields that are 2–3 percentage points higher than conventional pressing methods. In practical terms, 100 kg of peanuts can produce 2–6 kg more oil compared to traditional equipment. The gentle, uniform pressure of hydraulic compression extracts oil thoroughly from each batch.

Both technologies are competitive in yield; the choice depends on whether you prioritize per-batch extraction quality (hydraulic) or total daily throughput (screw).

2.3 Oil Quality and Nutritional Retention

Oil quality depends on the entire processing chain — raw material preparation, temperature control, and post-press filtration — not just the press type itself.

• Screw presses generate friction heat. Traditional models can overheat heat-sensitive seeds. Modern temperature-controlled versions solve this with electric heating rings that keep chamber temperature stable and consistent.

• Hydraulic presses operate with almost no friction heat and can stay at ≤50°C throughout the cycle. This preserves delicate flavor compounds and nutrients, making them the preferred choice for premium sesame, walnut, and almond oils.

2.4 Operation Complexity and Labor Requirements

• Screw presses run with automatic continuous feeding and discharging, so labor demand during production is low. Operators mainly monitor feed rate, temperature, and cake discharge. Long-term maintenance focuses on wear parts (screw, cage, bearings).

• Hydraulic presses are simpler to learn. Modern units can complete a full cycle (load → press → unload) in about 8 minutes. One person can often manage several machines. Daily checks center on hydraulic oil level, pressure, and seals.

Bottom line: If you have limited skilled labor, the hydraulic press is easier to staff; if you need continuous high output with minimal operators, the screw press wins on labor efficiency per ton.

2.5 Energy Consumption and Operating Costs

• Screw presses use motors from 4 kW to 30 kW. Adding temperature control and vacuum filtration increases power draw, but the higher daily throughput usually lowers energy cost per ton of oil.

• Hydraulic presses are lighter on electricity (typically 1.1–2.2 kW) and can consume roughly 40% less power than a comparable-output screw press. However, because their hourly output is lower, total energy cost per ton of finished oil can actually be higher once daily volume exceeds 2–3 tons.

3. How to Choose the Right Oil Press for Your Production Needs

Choosing between a screw press and a hydraulic press ultimately comes down to matching your specific production scenario with the right technology. Use the selection matrix below to narrow your options quickly.

Oil Press Selection by Production Scenario

Scenario	Recommended Machine	Why
Small workshop pressing peanuts or rapeseed (daily output <1 ton)	Hydraulic oil press	Lower initial investment, simple operation, adequate capacity for small batches
Medium oil mill processing multiple oilseeds continuously (daily output 1–20 tons)	Screw oil press	Continuous operation, high throughput, versatile across 30+ oilseed types
Large-scale peanut or soybean oil production (daily output >10 tons)	Screw oil press (large configuration)	Highest daily capacity, lowest residual oil rate, best economics at scale
Multi-crop seasonal processing (different oilseeds each season)	Screw oil press	Wide raw material adaptability; one machine handles peanuts, soybeans, rapeseed, sunflower, sesame, and more
High-value walnut or almond oil for health-food market	Hydraulic oil press machine	Gentle extraction preserves delicate nutrients; premium oil commands higher market price
Integrated small-to-medium production (pressing + filtration in one unit)	Screw press with integrated vacuum filtration	All-in-one configuration eliminates need for separate filtration equipment; cleaner output, lower labor

4. Four Costly Mistakes to Avoid When Choosing an Oil Press

1. Don't buy a hydraulic press for continuous multi-ton daily production — it will become a bottleneck within the first season.

2. Don't skip temperature control on a screw press if you process sesame, walnut, or other heat-sensitive seeds. Residual oil and flavor both suffer.

3. Don't judge only by purchase price. A 1–2% higher residual oil rate can wipe out the "cheaper machine" advantage in less than a year.

4. Don't ignore future hybrid needs. Many successful mills run a screw press for volume crops and keep a hydraulic / cold press oil press for high-value specialty oils. Plan foundation and power capacity accordingly from day one.

This checklist alone often saves buyers from the two most expensive mistakes: under-capacity and wrong temperature strategy.

5. Frequently Asked Questions About Screw and Hydraulic Oil Presses

Q1. How do I calculate the real daily oil output difference between a screw press and a hydraulic press for my raw materials?

Don't just compare the machine's rated capacity. Use this simple formula:

(Daily seed input × expected oil content × extraction efficiency) – residual oil loss.

For most peanuts and rapeseed, a continuous screw press running 20+ hours can deliver 3–5× more finished oil per day than a hydraulic unit of similar footprint, even if the hydraulic unit shows a slightly higher per-batch yield. Always run the numbers with your actual seed oil content and planned operating hours rather than catalog figures.

Q2. Can I start with a hydraulic press and later upgrade to a screw press line without wasting the original investment?

Yes, but plan the layout carefully. Keep the hydraulic unit for specialty/cold-press small batches and use it as a pre-press or trial machine. Many operators successfully run a hybrid setup: screw press for main volume (peanut, soybean, rapeseed) and hydraulic for high-value walnut/almond/sesame. The key is to design foundation and power capacity for the future screw line from day one, so the hydraulic unit doesn't become stranded capital.

Q3. When does the higher electricity cost of a screw press actually become cheaper per ton of oil?

Usually when daily throughput exceeds 1.5–2 tons of seed. Below that volume, the hydraulic press's lower power consumption (1.1–2.2 kW) often wins on energy cost per ton. Above 3–4 tons/day, the screw press's continuous operation and lower residual oil typically reverse the equation, even though its motor is larger. Ask the supplier for a side-by-side kWh-per-ton calculation based on your exact daily volume and local electricity price — this single number often decides the purchase.

6. Find the Right Oil Press Solution for Your Business with Glory Oiltech

Both screw and hydraulic oil presses are proven, reliable technologies, but each is designed for different production requirements.

Screw presses deliver continuous throughput and versatility across oilseed types, making them a practical choice for commercial edible oil mills. Hydraulic presses offer gentle, low-temperature extraction, making them suitable for premium specialty oil production where flavor and nutritional retention are priorities.

The best investment is the one that matches your raw materials, production volume, target oil quality, and long-term business plans.

At Glory Oiltech (Henan Glory), we manufacture and supply both screw press and hydraulic press solutions, along with integrated systems that combine temperature control and vacuum filtration in a single unit. Our equipment has been exported to over 20 countries and is backed by comprehensive technical support and after-sales service.

Whether you need a compact unit for a small workshop or a high-capacity system for commercial milling, Glory Oiltech can help you find an equipment configuration that matches your production goals and budget.

Contact Glory Oiltech

• WhatsApp: +86 135 2662 7860

• Email: market@doinggroup.com

• Official Website:

  https://www.palmoilextractionmachine.com/palm_oil_processing_machine/

  http://www.cookingoilmillmachinery.com/cooking_oil_processing_machine/

Small Oil Refinery Equipment: A Guide for Rural Oil Mills

 For a small rural oil mill, producing crude oil is only the first step. If you want to sell edible oil, you also need to consider how to refine it to meet your target market's quality requirements.

But what refining equipment does a small oil mill actually need? Is a simple filter enough, or do you need a complete batch refining line?

For many small-scale operations, batch-type edible oil refining equipment is a practical starting point. It offers flexibility, can handle different oil types, and is available in capacities suitable for smaller processing businesses.

This guide covers the main refining stages, the equipment involved, heating options, and how to choose a suitable setup for your oil mill.

1. Why Does Crude Oil Need Refining?

Crude oil obtained directly from pressing often contains gums, free fatty acids, pigments, moisture, and other impurities. These can affect its appearance, stability, odor, and suitability for sale as edible oil.

Different oils have different refining requirements.

Palm Oil

Crude palm oil naturally contains carotenoids, which give it its characteristic deep red-orange color. Its free fatty acid (FFA) content can also increase significantly when palm fruits are damaged or stored too long before processing.

Cottonseed Oil

Cottonseed oil contains gossypol, a naturally occurring compound that must be controlled to meet edible oil safety requirements. Crude cottonseed oil can also have a deep color, along with gums and free fatty acids.

Rapeseed Oil

Crude rapeseed oil can have a strong, pungent smell due to natural volatile compounds and processing conditions. This odor may be undesirable in markets where consumers prefer a mild-flavored cooking oil.

Sunflower Oil

Crude sunflower oil can contain phospholipids, free fatty acids, pigments, and suspended impurities. These can contribute to processing difficulties, unwanted color, cloudiness, or sediment in the finished oil.

Understanding your crude oil's characteristics helps determine which refining stages and equipment your oil mill needs.

2. What Equipment Is Included in a Small Oil Refining Line?

A small oil refining line uses several pieces of equipment arranged in sequence. Each stage performs a specific function, and the final configuration depends on the crude oil being processed and the required finished-oil quality.

Degumming: Removing Gums and Phospholipids

Degumming removes phospholipids, proteins, and other gummy substances from crude oil.

The process takes place in a refining tank. The oil is heated, and water or acid is added as required to help the gums hydrate and separate from the oil.

Neutralization: Reducing Free Fatty Acids

Neutralization, also called deacidification in this context, reduces the free fatty acid content of crude oil.

An alkali solution is added in the refining tank, converting free fatty acids into soapstock, which is then separated from the oil. This helps improve oil stability and shelf life.

Bleaching: Improving Oil Color

Bleaching reduces unwanted pigments and certain remaining impurities.

The oil is mixed with bleaching earth or activated carbon and heated. The spent adsorbent is then removed through filtration, taking the captured pigments and impurities with it.

This stage requires a bleaching tank and suitable filtration equipment.

Deodorization: Removing Unwanted Odors and Flavors

Deodorization removes undesirable smells and flavors, along with remaining free fatty acids and volatile compounds.

This stage requires a deodorizer tank, a suitable vacuum system, and a high-temperature heating setup to strip volatile substances under vacuum.

These components need to work together. A refining tank alone is not enough: heating, vacuum, filtration, and the other process requirements must all be matched to the selected refining method.

3. How to Choose the Right Batch Refining Capacity

Glory Oiltech supplies batch refining equipment for processing capacities from 0.5 to 20 TPD, covering a range of small oil mill applications.

Batch refining is generally suited to operations processing 20 TPD or less. It offers relatively simple operation, lower initial investment, and flexibility when switching between different oil types.

A typical batch refining line includes:

• A refining tank, sometimes called a neutralization tank

• A bleaching tank

• A deodorizer

• A filter

• A vacuum pump

• A heat transfer oil furnace, where thermal oil heating is used

The exact equipment list can be adjusted according to your budget, crude oil characteristics, and finished-oil quality requirements.

Electric Heating vs. Thermal Oil Heating

There are two heating options to consider when selecting small batch refining equipment.

Electric Heating (0.5–2 TPD)

• Uses resistance heaters to heat the oil.

• Has a lower initial equipment cost.

• Requires reliable electricity and stable voltage.

• Can result in higher operating costs where electricity is expensive.

Thermal Oil Heating (Typically for Capacities of 1 TPD and Above)

• Uses a heat transfer oil furnace to provide indirect heating.

• Requires additional upfront investment in the furnace and associated equipment.

• Provides steady heating and may offer lower operating costs over time, depending on local energy prices and operating conditions.

When selecting capacity and heating configuration, consider how much crude oil you process each day, how many batches you can run, which oil types you handle, and the quality required for the finished product.

Remember that rated equipment capacity is not the same as finished edible oil output. Actual yield depends on oil recovery, refining losses, the type of crude oil, and the operating conditions of your mill.

4. Frequently Asked Questions About Small Oil Refining Equipment

Can I Filter Crude Oil Instead of Refining It?

Filtration removes some suspended particles and sediment, making the oil look clearer. However, it does not remove all free fatty acids, gums, pigments, or unwanted odors.

If you plan to sell edible oil commercially, filtration alone may not be sufficient. Whether you need a complete refining line depends on the condition of your crude oil and the quality requirements of your target market.

Is a Batch Refining Line Enough for a Rural Oil Mill?

For many small rural operations, batch refining is suitable because it can accommodate variable output, different oil types, and limited investment budgets.

However, if you process the same oil every day at a steady volume and require continuous operation, semi-continuous options may also be worth evaluating.

The choice depends on your production pattern and operational priorities.

How Do I Know Whether My Crude Oil Needs Deodorization?

Consider the smell of your finished oil, customer preferences, and shelf-life requirements.

If the oil has an undesirable odor, your customers prefer a milder flavor, or your target product requires deodorization, this stage may be necessary.

Some local markets prefer the natural aroma of oil that has not been deodorized. The decision should reflect both the characteristics of the crude oil and the expectations of your buyers.

Can I Start Small and Expand Later?

Yes. Many small rural oil mills begin with a modest batch refining setup and expand as production grows.

When planning the initial installation, consider the site layout, electrical capacity, heating system, storage space, and room for additional equipment.

Planning these requirements in advance can help reduce the need for major modifications when expanding your small-scale edible oil refining operation.

5. How to Choose a Refining Solution for Your Oil Mill

Every rural oil mill has different requirements. Your crude oil type, daily processing volume, target finished-oil quality, and available utilities all influence the equipment configuration.

Before choosing a refining line, clarify four key points:

• Raw material: Which oilseeds are you processing, and what type of crude oil will enter the refining line?

• Processing capacity: How many tons of crude oil do you need to refine per day?

• Finished-oil quality: What quality standards and product characteristics must the refined oil meet?

• Site conditions: What space, electricity, heating resources, and storage facilities are available?

Glory Oiltech supplies edible oil refining equipment for small-scale operations, with configurations designed around the customer's raw materials, capacity, and product requirements.

Rather than selecting equipment based on capacity alone, evaluate how the complete refining process will work under your actual operating conditions.

If you are planning a new rural oil mill or upgrading an existing pressing operation, discussing these requirements with an experienced supplier can help you identify the equipment and process configuration your project needs.

Conclusion: Find the Right Refining Equipment for Your Oil Mill

Choosing small oil refinery equipment involves more than comparing machine prices. The right setup should match your crude oil type, daily capacity, available utilities, investment budget, and target finished-oil quality.

For many rural oil mills, batch refining offers a flexible starting point. By selecting the appropriate refining stages, heating system, and equipment configuration, you can plan a solution around your actual production needs.

100TPD Soybean Oil Processing Plant: Expanding + Pressing vs. Solvent Extraction

 Choosing the right processing route for a 100TPD soybean oil plant can affect more than your initial investment. It also determines how much oil you recover, the value of your soybean cake or meal, and how easily you can expand your operation in the future.

So, which route makes more sense for your project: expanding + pressing or expanding + solvent extraction?

At Glory Oiltech (Henan Glory), we work with clients on both processing options. Expanding + pressing offers a lower initial investment, with a residual oil rate of 4–6% after expanding. Expanding + solvent extraction can reduce residual oil to below 1%, but requires a higher investment and dedicated solvent-handling infrastructure.

In this guide, we compare the two routes, explain their process flows, and examine the key factors to consider before choosing a configuration for your 100TPD soybean oil processing plant.

1. Understanding the Two Processing Routes for a 100TPD Soybean Plant

Route A: Expanding + Pressing

Process flow: Cleaning → Destoning → Magnetic Separation → Crushing → Expanding → Oil Pressing → Filtration → Crude Oil + Cake

Route B: Expanding + Solvent Extraction

Process flow: Cleaning → Destoning → Magnetic Separation → Crushing → Expanding → Drying → Solvent Extraction → Miscella Evaporation and Stripping, Wet Meal Desolventizing, Solvent Recovery → Crude Oil + Meal

2. Route A: Expanding + Pressing — Process Flow, Residual Oil Rate, and Benefits

Pre-treatment: Cleaning and Crushing Soybeans

Raw soybeans first pass through a vibrating screen to remove large impurities, then a destoner to remove stones and dirt, followed by a magnetic separator to capture metal fragments. The cleaned beans are then crushed by a double-roller crusher into 6 to 8 pieces.

Expanding: Improving Oil Release

The crushed soybeans enter the expander where they are subjected to approximately 140°C temperature and mechanical pressure. The expander squeezes the material into porous pellets, breaking down cell structures to significantly improve oil release during pressing. This is a key differentiator: after expanding, the residual oil rate drops to 4–6%, compared to about ≤8% if you skip expanding and press only cleaned, crushed beans.

Oil Pressing and Filtration

The expanded material feeds into screw oil presses where mechanical pressure extracts crude oil. The remaining cake contains the residual oil and is discharged for further processing or sale. The crude oil then passes through a filter to remove fine solids, producing clean filtered crude soybean oil ready for storage or further refining.

After pressing, the by-product cake (protein ~40%) can be bagged directly and sold as animal feed, providing an additional revenue stream.

Advantages and Limitations of Expanding + Pressing

Advantages:

• Saves on softening machine, flaker, and cooker, resulting in lower initial investment and a good cost-performance ratio.

• Simplifies the overall process.

• The by-product cake has a potential local market as animal feed.

Limitations:

The residual oil rate of 4–6% is higher than what solvent extraction achieves, meaning more oil remains in the cake.

3. Route B: Expanding + Solvent Extraction — Process Flow, Performance, and Requirements

Pre-treatment: Preparing Expanded Soybeans

Raw soybeans undergo cleaning, destoning, magnetic separation, and crushing — identical to Route A up to this point. After crushing, the material enters the expander where it is pelletized at elevated temperature. This shared front end is what makes the soybean oil extraction process a potential upgrade path rather than a completely new build.

The expanded pellets then pass through a flat-bed dryer to reduce moisture to the optimal level for solvent penetration.

Solvent Extraction: Recovering More Oil

In the soybean oil extraction process, the dried, expanded material feeds into an extractor where food-grade n-hexane solvent dissolves the oil from the soybean meal. The resulting miscella (oil-solvent mixture) is sent to evaporation and stripping systems to separate crude oil from the solvent.

The wet meal exits the extractor and passes through a desolventizer-toaster (DTDC) unit to remove residual solvent, producing final soybean meal with residual oil below 1%.

Key Performance Data for Solvent Extraction

Parameter	Value
Minimum viable scale	≥20 tons/day
Solvent type	n-hexane (food-grade light petroleum ether)
Steam consumption	<280 kg per ton of material
Electricity consumption	<12 KWH per ton of material
Solvent consumption	<4 kg per ton of material
Water consumption	<25 kg per ton of material (recirculating)

Advantages and Limitations of Solvent Extraction

Advantages:

• A low residual oil rate (<1%) means the soybean oil extraction process recovers more oil from every ton of soybeans.

• The resulting meal has a high protein content of about 43%, potentially commanding better prices in the feed market.

Limitations:

• Requires dedicated extraction equipment, a solvent recovery system, and explosion-proof workshop design, resulting in higher initial investment.

• The crude oil produced requires refining (degumming, deacidification, bleaching, and deodorization) before it can be sold as edible oil.

• Solvent handling requires trained operators and strict safety protocols.

4. Expanding + Pressing vs. Solvent Extraction: A Side-by-Side Comparison

The best option depends on your investment budget, oil recovery targets, by-product market, and operational capabilities.

Comparison Dimension	Route A: Expanding + Pressing	Route B: Expanding + Solvent Extraction
Residual oil rate	4–6% (after expanding)	Below 1%
Extraction rate	~85–90%	Up to 99%
Cake/meal protein	40%	43%
Initial investment	Lower	Higher
Operational complexity	Low (simplified process, easier operation)	High (solvent management, explosion-proof safety)
By-product value	Cake can be directly sold as animal feed	Higher-protein meal suitable for premium feed markets
Best suited for	Budget-conscious operators, markets with local cake demand, simpler operations	Operators seeking maximum oil recovery, high-protein meal markets, and experience with solvent handling

5. Can You Start with Pressing and Upgrade to Solvent Extraction Later?

One often-overlooked advantage of these two routes is that both share the same front-end equipment.

When designing a 100TPD soybean oil processing plant, a client with a tighter budget can start with the expanding + pressing route, generate revenue and build market presence, and later add the solvent extraction section when capacity expansion and additional budget allow — without tearing down and rebuilding the front-end equipment.

This phased approach can reduce upfront capital commitment while keeping the door open for higher oil recovery in the future.

6. Nigeria Project Reference: 50TPD Expanding + Pressing Production Line

Our Nigerian customer visited our facility in July 2023 during the solution comparison phase. After evaluating multiple equipment suppliers, they selected Glory Oiltech based on our quality standards, technology capabilities, and local service advantage in Africa.

The 50TPD soybean oil expanding pressing production line — including vibrating screen, destoner, magnetic separator, crusher, expander, screw presses, and filter press — was successfully installed and put into trial operation in March 2024, with stable equipment performance throughout.

At Glory Oiltech, we provide turnkey solutions across a capacity range of 1 to 2,000 tons per day, supporting projects with different production targets and investment plans.

7. Frequently Asked Questions About 100TPD Soybean Oil Processing Plants

Q1: What hidden costs should I budget for beyond the equipment price?

Beyond the base equipment quote, budget for these often-underestimated items: (1) Site preparation — foundation work, electrical infrastructure, and civil engineering; (2) Power backup — many markets require generator backup, which is a separate capital item; (3) Solvent inventory and recovery — for extraction routes, n-hexane is a recurring cost though largely recycled; (4) Refining — crude oil from pressing or extraction needs refining (degumming, deacidification, bleaching, deodorization) before it can be sold as edible oil; (5) Spare parts stock — especially filter cloths, press screws, and expander liners; (6) Installation and commissioning — while our engineers stay on-site until full commissioning, logistics and accommodation costs should be factored in. A comprehensive turnkey quote from an experienced supplier should clarify which of these items are included.

Q2: Is n-hexane safe for food-grade soybean oil production?

Yes, when properly managed. Food-grade n-hexane (also known as petroleum ether) is the industry-standard solvent used in the soybean oil extraction process worldwide. The key safety and quality controls are: (1) Solvent recovery rate — modern extraction systems recover over 99.9% of the solvent through condensation and distillation, leaving residual solvent in the meal below 500 PPM (as stated in the original project data); (2) Crude oil residual solvent — the final crude oil after evaporation and stripping contains less than 300 PPM residual solvent, which is further reduced during refining; (3) Explosion-proof design — extraction workshops must be designed as explosion-proof zones with proper ventilation, spark-proof equipment, and gas detection systems; (4) Operator training — trained personnel following standard operating procedures are the most critical safety factor. Glory Oiltech provides complete solvent management protocols and operator training as part of our turnkey delivery. Actual compliance requirements should be confirmed against applicable local regulations.

Q3: What protein content can I expect from soybean cake or meal at 100TPD scale?

The protein content depends on whether you dehull the soybeans before processing: Without dehulling, pressing cake contains approximately 40% protein, while extraction meal contains 43% protein. With dehulling, the meal protein can reach 45%–50%, which may command a premium price in the animal feed market. For operators focused on maximizing by-product revenue, investing in a dehulling step before extraction can improve the value of meal sales, even though it adds a front-end equipment cost.

8. Get a Customized Soybean Oil Processing Solution from Glory Oiltech

Choosing the right process for your 100TPD soybean project isn’t about picking the “best” technology — it’s about matching the right technology to your budget, your market, and your growth plans.

Whether you start with expanding + pressing and upgrade later, or go straight to expanding + solvent extraction, the key is to evaluate your oil recovery targets, by-product market, investment capacity, and operating requirements before making a decision.

At Glory Oiltech, we bring over a decade of experience in designing and delivering soybean oil processing plants. Our team of 40+ engineers supports projects from concept to commissioning.

Planning a 100TPD soybean oil processing plant? Share your raw materials, target processing capacity, and intended final products with our team. We’ll help you evaluate a suitable configuration for your project.

Contact Glory Oiltech

• WhatsApp: +86 135 2662 7860

• Email: market@doinggroup.com

• Official Website:

  https://www.palmoilextractionmachine.com/palm_oil_processing_machine/

  http://www.cookingoilmillmachinery.com/cooking_oil_processing_machine/

Let’s discuss a soybean oil processing solution that fits your production goals and future plans.

Meet Glory Oiltech at Nigeria (Lagos) China Commodities Expo 2026

 Are you planning to start a palm oil processing business, expand your existing mill, or explore palm oil processing equipment for your next project?

Glory Oiltech invites you to meet our team at the 19th Nigeria (Lagos) China Commodities Expo 2026, taking place from November 3–5, 2026, at the Landmark Exhibition Center in Lagos, Nigeria.

Visit us at Booth 1B09 to connect with our team, discuss your processing requirements, and explore equipment solutions for your palm oil business.

Why Meet Glory Oiltech at the Exhibition?

Selecting suitable palm oil processing equipment requires careful consideration of production capacity, plant configuration, investment budget, and future development plans.

Meeting face-to-face gives you an opportunity to discuss your project requirements directly with our team.

At the exhibition, you can:

• Discuss your palm oil processing project: Share your plans for a new mill or an existing production facility.

• Explore equipment options: Learn more about palm oil processing equipment and potential configurations for your needs.

• Discuss production requirements: Talk about your target capacity, processing objectives, and equipment selection.

• Connect with our team: Exchange ideas and explore possible cooperation opportunities.

Whether you are an investor, palm oil producer, equipment buyer, or industry partner, we look forward to connecting with you.

Exhibition Details: Nigeria (Lagos) China Commodities Expo 2026

Planning to attend? Save these details for your visit.

• Event: 19th Nigeria (Lagos) China Commodities Expo 2026

• Date: November 3–5, 2026

• Venue: Landmark Exhibition Center, Lagos, Nigeria

• Exhibitor: Glory Oiltech

• Booth Number: 1B09

We encourage visitors interested in palm oil processing equipment to stop by our booth and discuss their project goals with our team.

Who Should Visit Our Booth?

Our exhibition team welcomes visitors with different business needs, including:

• Entrepreneurs planning to establish a palm oil mill

• Palm oil processors looking to expand production

• Existing mills considering equipment upgrades

• Investors evaluating palm oil processing opportunities

• Business partners interested in the palm oil industry

If you are evaluating equipment for a new project or looking for ways to improve your existing processing operation, this exhibition is an opportunity to start a conversation.

Let’s Connect in Lagos

Glory Oiltech looks forward to meeting customers, partners, and industry professionals at the 2026 exhibition.

Join us at Booth 1B09 from November 3–5, 2026, at the Landmark Exhibition Center in Lagos, Nigeria. We look forward to learning about your project and discussing your palm oil processing equipment requirements.

Would you like to connect with us before the exhibition? Contact our team directly.

Glory Oiltech Contact Information

• WhatsApp: +86 135 2662 7860

• Email: palmoil@doinggroup.com

• Official Website:

  https://www.palmoilextractionmachine.com/palm_oil_processing_machine/

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Oilseed Pretreatment Guide: How to Choose the Right Process and Equipment for Different Seeds

 Choosing the right oilseed pretreatment process is essential for efficient oil extraction, consistent crude oil quality, and controlled operating costs.

Different oilseeds have different physical structures and chemical properties. A process that works well for soybeans may not be suitable for rice bran or sunflower seeds. Choosing the wrong pretreatment configuration can waste energy, increase equipment wear, and reduce oil recovery.

In this guide, we compare the pretreatment processes for five major oilseeds—rice bran, soybeans, rapeseed, sunflower seeds, and sesame—and explain how to select suitable oilseed pretreatment equipment for your raw material and production capacity.

Glory Oiltech (Henan Glory) provides customized oilseed pretreatment solutions for different processing requirements.

1. Why Is Oilseed Pretreatment Important?

Oilseed pretreatment prepares raw materials for efficient oil extraction and influences both oil recovery and downstream refining requirements.

The main pretreatment steps serve different purposes:

• Cleaning: Removes stones, metals, soil, stems, leaves, and other impurities that may damage equipment or affect oil quality.

• Dehulling: Removes fibrous outer shells that can retain oil, introduce unwanted wax and color compounds, and accelerate equipment wear.

• Cracking: Reduces seed size to support more uniform processing in subsequent stages.

• Flaking: Ruptures cellular structures and increases surface area for solvent contact.

• Cooking and extrusion: Use heat and steam to adjust moisture and temperature, lower oil viscosity, coagulate proteins, and prepare the material for oil release.

The correct combination depends on the type of oilseed, the extraction method, and the required production capacity.

2. The Main Oilseed Pretreatment Equipment and Its Functions

Cleaning and Impurity Removal

Cleaning is the first step in oilseed processing. Vibrating sieves, air aspirators, and magnetic separators remove soil, stems, leaves, stones, and metal contaminants.

Skipping effective cleaning can damage downstream equipment and reduce oil quality. Some impurities may also retain oil that would otherwise be recovered.

Dehulling

Dehulling removes the outer shell from oilseeds with fibrous hulls, including sunflower seeds, peanuts, and cottonseeds.

Hulls can retain oil, introduce wax and color compounds into crude oil, and accelerate wear on pressing screws. Effective dehulling and shell separation are therefore important for oil recovery and meal quality.

Cracking

Cracking reduces seed size before further processing. Seeds that remain too large may obstruct oil flow paths, while excessive size reduction can increase resistance to oil flow and block the oil path.

Flaking

Flaking mills pass cracked seeds through rollers to produce thin flakes. This process ruptures cellular structures and increases the surface area available for solvent contact.

Cooking and Extrusion

Cookers and screw expanders use heat and steam to lower oil viscosity, coagulate proteins, and prepare the material for more efficient oil release.

Glory Oiltech's pretreatment equipment and production lines are designed to provide consistent feed quality for downstream processes, helping operators maximize oil recovery and minimize production downtime.

3. Oilseed Pretreatment Process by Raw Material

Each oilseed has specific processing requirements. The following sections explain the typical pretreatment flow and the key considerations for five commonly processed oilseeds.

Rice Bran Pretreatment

Typical process flow:

Rice Bran → Cleaning (Bran Separation Screen) → Conditioning → Expanding → Drying (Plate Dryer)

Rice bran is unstable from the moment it leaves the rice mill. It contains active lipases and high moisture, so free fatty acid levels can rise quickly. Untreated bran can turn rancid within about six hours, making stabilization a critical step.

Cooking or expanding at 110–130°C deactivates enzymes and helps prevent rapid acidification, protecting oil quality and reducing downstream refining challenges.

Expanding also granulates the bran, improving flowability and porosity for easier solvent penetration. After extrusion and drying, stabilized bran can be stored for roughly 10–15 days under ideal conditions.

Glory Oiltech designs rice bran pretreatment lines that integrate rapid stabilization with controlled drying to help preserve oil quality from the rice mill to the extractor.

Soybean Pretreatment

Typical process flow:

Soybeans → Cleaning (Vibrating Screen, Magnetic Separator, Destoner) → Cracking → Flaking → Cooking → Extrusion

Soybeans hold oil inside a dense cellular structure and drain poorly under pressure alone. Simple pressing can therefore leave a considerable amount of oil behind.

Cooking at around 65°C, with moisture adjusted through steam, improves plasticity and reduces flaking dust. Flaking then ruptures cell walls and increases surface area. Cooking also lowers oil viscosity and coagulates proteins.

Extrusion is the final and most impactful step in this process. It further ruptures remaining cells and creates a porous structure that allows solvent to penetrate rapidly and thoroughly.

These processing requirements should be considered when selecting soybean pretreatment equipment for a commercial operation.

Rapeseed (Canola) Pretreatment

Typical process flow:

Rapeseed → Cleaning (Vibrating Screen, Magnetic Separator, Destoner) → Conditioning → Flaking → Cooking

Rapeseed has a high oil content and contains glucosinolates together with enzymes that act on them when moisture and heat are present.

Conditioning and cooking are therefore important. Proper heat treatment inactivates the relevant enzyme, limits unwanted compounds, and coagulates protein so that the seed releases oil more easily.

Sunflower Seed Pretreatment

Typical process flow:

Sunflower Seeds → Cleaning (Vibrating Screen, Magnetic Separator, Destoner) → Dehulling → Shell Separation → (Flaking) → Cooking

Sunflower hulls are fibrous, highly abrasive, and contain very little oil. They can also absorb a noticeable amount of oil.

If hulls remain in the material, more oil may be lost in the press cake. They can also accelerate wear on pressing screws and flake rolls, while reducing the protein content of the meal.

Dehulling and shell separation are critical steps for both oil recovery and meal value. Flaking before pressing can further increase surface area and improve oil drainage.

Sesame Pretreatment

Typical process flow:

Sesame → Cleaning (Magnetic Separator, Vibrating Screen, Destoner) → Cleaning (Vibrating Screen, Destoner, Vibrating Screen) → Roasting (Roaster)

Sesame is small, oil-rich, and valued for its aroma. Cleaning and roasting are therefore important for the final product.

Because sesame seeds are small, impurities such as stone dust, sand, and plant debris can be difficult to separate by size alone. The process described here uses two consecutive cleaning stages.

Roasting helps develop sesame oil's characteristic aroma. Unlike oilseeds commonly prepared using steam cooking, sesame traditionally uses direct-fire or high-temperature roasting, ideally at 180–200°C, to develop characteristic aroma compounds through Maillard reactions.

For aromatic sesame oil, many mills use carefully controlled roasting temperatures to preserve the desired flavor.

4. How to Choose the Right Oilseed Pretreatment Line

Selecting suitable pretreatment equipment requires more than comparing machine prices. Five factors should be considered.

1. Raw Material Type and Oil Content

Different oilseeds require different processing steps. Sunflower seeds may need dehulling and shell separation, while rice bran requires rapid stabilization to limit enzyme activity.

2. Target Daily Capacity

Production capacity affects equipment size and line configuration. The requirements for a small plant processing 1–10 tons per day differ from those for a large plant processing 50 tons per day or more.

3. End Product Specifications

Food-grade oil for human consumption may require stricter impurity removal and temperature control than oil intended for industrial applications.

4. Available Utilities

Steam, electricity, and water availability influence equipment selection and whether steam-assisted conditioning or dry processing is suitable.

5. Facility Constraints

Available floor space, ceiling height, and workshop layout affect equipment configuration and production line arrangement.

Glory Oiltech's engineering team provides a site preparation checklist during the design phase to help ensure that the pretreatment line matches the raw material and production target.

5. Frequently Asked Questions About Oilseed Pretreatment

Q1. What steam and power requirements should I plan for a pretreatment workshop?

Steam consumption depends primarily on the cooking or extrusion step and the scale of operation. As a general rule, steam requirements increase with the capacity of the cooker or expander.

Power demand is driven by cleaning equipment, crushers, flakers, and conveyors. Glory Oiltech's engineering team can provide a utility calculation based on the selected equipment configuration and daily capacity during the design phase.

Q2. How can I tell if my current pretreatment process is underperforming?

Common warning signs include:

• Oil yield falling below expected benchmarks for the seed type.

• High residual oil in the press cake, such as above 8% for pressing.

• Excessive fine particles in the crude oil.

• Inconsistent oil color and flavor between batches.

A pretreatment audit can review moisture control, flake thickness consistency, cooking temperature records, and equipment wear patterns to help identify the root cause. The original process guide indicates that this review can often pinpoint the problem within one week.

Q3. Is expanding always necessary, or can I skip it to reduce capital costs?

Expanding is not mandatory for every oilseed, but it can significantly improve extraction efficiency for many materials.

For rice bran, expanding granulation helps create a free-flowing feed and prevent channeling in the extraction vessel. For soybeans, expanding after flaking further ruptures cells and gelatinizes proteins, potentially increasing oil yield by several percentage points compared with flaking alone.

If capital is limited, one option is to start with flaking and cooking, then add expanding later as a capacity or yield upgrade. The final configuration should be determined by the raw material, extraction method, and production target.

6. Conclusion: Match Pretreatment Equipment to Your Oilseed

There is no single pretreatment process that suits every oilseed. Rice bran requires rapid stabilization, soybeans benefit from carefully selected cracking, flaking, cooking, and extrusion steps, sunflower seeds depend heavily on effective dehulling and shell separation, and sesame requires particular attention to cleaning and roasting.

Choosing equipment according to your raw material, target capacity, utility conditions, and final product requirements can help improve oil recovery, maintain consistent feed quality, and protect your equipment investment.

Glory Oiltech provides customized oilseed pretreatment solutions, covering cleaning, dehulling, cracking, flaking, cooking, and extrusion. If you are planning a new oil mill or upgrading an existing pretreatment workshop, our team can help evaluate your processing requirements and recommend a suitable equipment configuration.

Contact Glory Oiltech to discuss your oilseed pretreatment project:

• +86 13526615783（WhatsApp）
• sales@doinggroup.com（Email）
• Official Website:
• http://www.cassavaprocessing.com
• http://www.cassavaprocessingplant.com
• http://www.cassavastarchmachine.com
• http://www.starchprojectsolution.com

How to Plan a Sunflower Oil Processing Plant: Capacity, Extraction and Equipment

Planning a sunflower oil processing plant is not simply a matter of choosing an oil press.

The plant configuration should be determined by several factors, including the available sunflower seed supply, target processing capacity, required oil recovery, final oil quality and available infrastructure.

For this reason, it is usually better to define the process first and select individual machines afterward.

1. Start With the Required Processing Capacity

Capacity is one of the first decisions because it affects equipment size, plant layout, utilities, automation and investment.

As a general reference, sunflower oil processing projects can be considered in three ranges:

• 1–20 TPD: Small-scale projects, commonly based on mechanical pressing
• 20–50 TPD: Medium-scale projects, where mechanical pressing or solvent extraction may be considered
• Above 50 TPD: Larger commercial and industrial projects, where mechanical pressing and solvent extraction may both be evaluated

These ranges are not fixed rules. The final configuration should also consider the available sunflower seed supply, expected annual operating volume, investment level and planned automation.

2. Choose the Right Oil Extraction Process

The two main extraction routes are mechanical pressing and solvent extraction.

Mechanical Pressing

Mechanical pressing uses a screw oil press to extract oil from prepared sunflower seeds without chemical solvents.

Its main advantages are:

• Simpler process flow
• Lower initial investment
• Easier operation and maintenance
• No solvent recovery section

For smaller sunflower oil projects, mechanical pressing can therefore be a practical choice.

Solvent Extraction

Solvent extraction is used to recover additional oil from the press cake after mechanical pressing.

The major advantage is higher overall oil recovery. Under appropriate operating conditions, the residual oil content of the extracted meal can be reduced to below 1%.

However, solvent extraction also requires additional processing equipment, utilities, safety systems and operating controls.

Therefore, the better question is not simply which extraction method is better. The choice should be based on the project's capacity, oil recovery target, investment level and operating conditions.

3. Build the Equipment List Around the Process

A sunflower oil processing plant normally consists of several connected processing sections.

A typical flow is:

Sunflower Seeds → Cleaning → Dehulling & Flaking → Conditioning → Oil Extraction → Crude Oil Filtration & Storage → Refining → Dewaxing → Filling & Packaging

Depending on the selected process, equipment may include:

• Vibrating screen
• Magnetic separator
• Destoner
• Dehuller / cracker
• Shell separator
• Flaker
• Cooker or conditioner
• Screw oil press
• Solvent extraction system
• D.T.D.C. system
• Oil filtration and storage equipment
• Refining equipment
• Dewaxing equipment

The equipment list should therefore be developed from the complete process flow instead of selecting machines independently.

4. Refining Is a Separate Stage From Oil Extraction

Mechanical pressing or solvent extraction produces crude sunflower oil.

Crude oil still contains substances such as phospholipids, free fatty acids, pigments, waxes and odor compounds.

A typical refining sequence is:

Degumming → Deacidification → Bleaching → Deodorization

Each stage addresses a different quality issue, helping improve the color, stability, odor and overall quality of the oil.

The required refining configuration also depends on production capacity, finished-oil requirements and the desired level of automation.

5. Why Dewaxing Matters for Sunflower Oil

Sunflower oil contains natural waxes that can crystallize at lower temperatures.

If these waxes remain in the finished oil, the oil may become cloudy during cool storage.

Dewaxing uses controlled cooling, crystallization and filtration to separate these waxes and improve the clarity of sunflower oil.

For projects producing clear packaged edible sunflower oil, dewaxing should therefore be considered when defining the overall refining configuration.

6. Project Experience Matters When Selecting a Plant Configuration

The same equipment configuration is not necessarily suitable for every sunflower oil project.

Henan Glory has supplied sunflower oil processing and related equipment for projects in different countries and at different production scales, including:

• Tanzania — 50 TPD: Pressing + solvent extraction
• Peru — 20 TPD: Sunflower oil refining
• Uzbekistan — 5 TPD: Refining + filling

These projects cover different stages of sunflower oil production, showing why plant configuration should be matched to the actual project requirements.

Final Consideration

Before investing in a sunflower oil processing plant, it is useful to define five things first:

1. Available sunflower seed supply
2. Target daily processing capacity
3. Required oil recovery
4. Finished oil quality
5. Available infrastructure and investment conditions

Once these are clear, the extraction route, equipment configuration, refining system and dewaxing requirements can be evaluated as one integrated process.

Henan Glory provides sunflower oil processing configurations from 1 to 2,000 TPD, covering mechanical pressing, solvent extraction, refining and dewaxing.

For a more detailed explanation of sunflower oil processing capacity, process selection, equipment configuration, refining and dewaxing, see the complete guide:

[https://www.cookingoilmillmachinery.com/FAQ/sunflower_oil_processing_plant_612.html]

Crude Oil Refining Equipment: Key Machines & Their Roles

Are you looking to improve oil quality and optimize production efficiency with right oil refining equipment for your edible oil processing plant? Drawing on years of industry experience, Henan Glory outlines the key machines for the crude oil refining equipment and their roles—to help you gain a clearer understanding of the equipment's value at each stage.

1. Degumming: Key Machines Used to Remove Phospholipids and Impurities

Degumming is the first step in oil refining, primarily aimed at removing hydrated and non-hydrated phospholipids, as well as particulate impurities, from crude oil.

Key Machines and Their Roles: 

Degumming Tank: The degumming tank is the core reaction vessel in the degumming process. Crude oil, preheated by a heat exchanger, enters the tank along with degumming agents such as phosphoric acid. The tank is typically equipped with a stirring device to ensure uniform mixing of the oil and reagents. Its stainless steel structure and sealed design effectively prevent contamination and ensure stable reaction conditions.

Heat Exchanger and Heater: Precisely controlling the oil temperature entering the degumming tank is crucial for ensuring the smooth progress of the hydration reaction.

Sealed Filter: As an auxiliary process, it can remove trace impurities from the oil.

2. Deacidification: Key Machines Used to Remove Free Fatty Acids

Deacidification aims to remove free fatty acids from oils to improve flavor stability and extend shelf life. Chemical neutralization is the most commonly used method.

Key Machines and Their Roles: 

Deacidification Tank: The key machine for batch crude oil refining. This multifunctional tank, equipped with stirring and heating, completes the entire deacidification process in one vessel. The process involves adding an alkali, heating and stirring to form soapstock, and then allowing it to settle for separation from the oil.

Disc Centrifuge: Essential for continuous crude oil refining equipment. Its high-speed rotation generates a powerful centrifugal force that enables highly efficient separation of soapstock, the by-product of deacidification.

Metering Pump: Accurately measures and delivers phosphoric acid and alkali solution.

Vacuum Dryer: Removes excess water from the washed oil.

3. Decolorization: Key Machines Used to Adsorb Pigments and Trace Impurities

Decolorization is the process of removing pigments (carotenoids, chlorophyll) and residual soap particles from oils using adsorbents (such as activated clay). The selection of equipment must be differentiated based on continuous and batch modes.

Key Machines and Their Roles:

Decolorization Tank/Tower: Continuous crude oil refining equipment uses a decolorization tower. Activated clay is added via an automatic quantitative feeding system and mixed with the oil preheated to 90°C within the tower. This equipment operates under vacuum conditions to prevent oxidation of the oil during heating. The resulting mixture is then filtered to separate the waste activated clay from the oil.

Activated Clay Quantitative Feeding System: Primarily used with continuous equipment to achieve precise addition of the adsorbent.

Heater: Controls the adsorption temperature required for decolorization.

Leaf Filter: Separates the decolorized oil from the waste activated clay.

4. Deodorization: Key Machines Used to Remove Odor-Causing Substances

Deodorization removes volatile substances that cause odors under high temperature and high vacuum conditions through steam distillation, enhancing the oil’s flavor.

Key Machines and Their Roles: 

Deodorization Tank/Tower: The deodorization tower is the key machine for continuous production, typically a complex vertical tower. It is made of stainless steel to withstand the high temperature (260°C) and the corrosion during deodorization. The decolorized oil undergoes continuous heat exchange and steam stripping within the tower, effectively removing volatile substances.

Vacuum System: Creates and maintains a high vacuum environment throughout the deodorization process, such as a steam jet pump.

Fatty Acid Collector: Recovers volatile fatty acids generated during deodorization as a byproduct.

Heat Exchange System: Significantly reduces steam consumption and achieves energy savings through efficient waste heat recovery.

Supporting and Control Systems

Semi-continuous and fully continuous refining equipment relies on a PLC-based automatic control system. This system automatically adjusts key parameters such as the temperature, pressure, flow rate, and stirring speed, minimizing human error, ensuring stable system operation, and effectively lowering labor costs. In contrast, batch refining equipment is mostly operated manually, where individual instruments monitor parameters such as the temperature and pressure of each piece of equipment. Manual adjustment is required, making it highly dependent on the operator's experience.

Henan Glory is ready to develop customized crude oil refining equipment tailored to your production scale. For a personal consultation, please feel free to contact us.