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  • Phone: +86 18015555136
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UOLEN Heat Transfer Fluids

Products

UOLEN® Heat Transfer Fluids Suit Almost
Every Application from –120°C to 400°C (–184°F to 752°F)

Our Core Products Include High- and Low-Temperature Heat Transfer Fluids High-Temperature Heat Transfer Fluids, Open Bath Oils, and Other Silicone Oils.
High-and Low-Temperature Heat Transfer Fluids
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Ultra-Low Temperature Heat Transfer Fluids Engineered for Extreme Conditions Down to -120°C/184℉

  • Exceptional Fluidity
  • Trusted by Industry Leaders
  • Long-Term Stability
-120℃（-184℉） 330℃（626℉）
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High Temperature Heat Transfer Fluids
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  • Extended Fluid Life: Advanced formulations (L-QB300, L-QC320, L-QD350) resist thermal cracking for long-lasting performance.
  • High-Temperature Stability: Reliable operation up to 400°C in closed-loop systems.
-15℃（5℉） 400℃（752℉）
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Open Bath Fluids
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Engineered for Open Baths & Air-Exposed Processes

  • Superior Oxidation Resistance: Stable performance with minimal volatility, even under continuous air exposure
  • Extended Oil Life: Fewer change-outs, lower maintenance costs, and a cleaner, safer workspace
  • Ideal for Precision Applications: Perfect for lab oil baths, reactors, and constant-temperature instruments
-60°C (-76°F) 250℃(482°F)
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Other Silicon Oils
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Dimethyl Silicone Oil (1 to 10 cst)

  • Personal Care: Silky, non-greasy feel. Improves spreadability.
  • Cleaners: Boosts wetting & defoaming. Enhances cleaning power.
  • Silicone Synthesis: High-purity chain terminator for precise polymer control.


Phenylmethylpolysiloxane

  • High Refractivelndex.Brilliant Gloss
  • ExceptionalHeat& Oxidation Stability
  • SuperiorLubricity,ExcellentResin Compatibility
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Application Industries

Trusted by over 3,000 Enterprises Empowering
Hundreds of Industries Worldwide

Pharmaceutical and Pesticide Industry

Pharmaceutical and Pesticide Industry

Pharmaceutical R&D: The thermal fluid delivers stable ultra-high or low temperature environments throughcirculation systems for processes such as pharmaceutical synthesis, crystallization, and con

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Petroleum & Fine Chemicals

Petroleum & Fine Chemicals

Petroleum Industry: As a safe, stable, and efficient indirect heat source, the thermal fluid is widely used in processes including crude oil pretreatment, pipeline heat tracing, heavy oil transport, a

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Aerospace & Scientific Research

Aerospace & Scientific Research

Aerospace: The thermal fluid simulates extreme low- and high-temperature conditions encountered at high altitudes or in outer space, enabling performance and reliability testing of various instruments

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Automotive and Semiconductor Industries

Automotive and Semiconductor Industries

Environmental Testing: The thermal fluid simulates extreme cold and hot climates for the development and testing of automotive components, evaluating their cold-start performance, air conditioning sys

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New Energy Industry

New Energy Industry

Lithium Battery Manufacturing: In the drying process following electrode coating, the thermal fluid enables precise temperature control in the cooling zone of drying ovens, preventing separator shrink

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Application Devices

Precision Control for Critical
Applications

UOLEN®heat transfer fluids are widely used in a variety of thermal equipment and laboratory instruments, including high-low temperature integrated units, reactors, freeze dryers, constant temperature oil baths, mold temperature controllers, thermal oil heaters, distillation units, heat exchangers, calenders, and other industrial systems that require precise and efficient temperature control.
High/Low Temperature Circulation Units

High/Low Temperature Circulation Units
Temperature Control Units(TCUs)

Temperature Control Units(TCUs)
Environmental Test Chamber

Environmental Test Chamber
Glass Reactor

Glass Reactor
Jacketed Reactor

Jacketed Reactor
Bioreactor

Bioreactor
Chiller Units

Chiller Units
Freeze Dryer

Freeze Dryer
TCU (Temperature Control Unit)

TCU (Temperature Control Unit)
Distillation Column

Distillation Column
Fractionating Column

Fractionating Column
Thermal Oil Heater

Thermal Oil Heater
Reactor

Reactor
Asphalt Heater

Asphalt Heater
Constant Temperature Oii Baths and Reactor Setup

Constant Temperature Oii Baths and Reactor Setup
Mold Temperature Controlle

Mold Temperature Controlle
Calender

Calender
Constant Temperature Oii Baths and Reactor Setup

Constant Temperature Oii Baths and Reactor Setup
Rubber Internal Mixer

Rubber Internal Mixer
Heat Setting Machine

Heat Setting Machine
Magnetic Stirrer

Magnetic Stirrer
High-Temperature Dyeing Machine

High-Temperature Dyeing Machine
Drying Equipment

Drying Equipment
Jacketed Cooking Kettle

Jacketed Cooking Kettle
ConstantTemperature Oii Baths

ConstantTemperature Oii Baths

Why us

Precision Thermal Fluids, Engineered for
Excellence

Precision Engineered, Cost-Effective Alternative
Precision Engineered, Cost-Effective Alternative
Superior Quality & Compatibility
Superior Quality & Compatibility
24/7 Technical Support
24/7 Technical Support
Certified Quality Management
Certified Quality Management
Trusted by 3,000+ Clients
Trusted by 3,000+ Clients
Fast & Trackable Global Shipping
Fast & Trackable Global Shipping
Our innovative heat transfer fluid technology delivers superior performance
and reliability, allowing us to compete directly with international brands.

About us

Innovating Fluid Technology with Science to
Let the World Feel the Power of Temperature

UOLEN® is a specialized heat transfer fluid company integrating product R&D, application development, andimport/export sales. Leveraging modern technology, UOLEN® continuously innovates eco-friendly, high-value-added products, committed to empowering the temperature control industry with thermal fluids and providingcustomers with high-quality products and application technology solutions….
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News

Focus on industry news to stay informed of market changes.

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What Are the Characteristics of Traditional Coolants?
March 7, 2024
What Are the Characteristics of Traditional Coolants?
How to Select a Coolant (Thermal Fluid) Scientifically?
June 16, 2024
How to Select a Coolant (Thermal Fluid) Scientifically?
What is an Organic Heat Transfer Fluid?
April 8, 2021
What is an Organic Heat Transfer Fluid?
What is a Coolant? What Are Its Characteristics?
July 1, 2020
What is a Coolant? What Are Its Characteristics?

Global Network

Our clients are spread across the globe.

3000+

Global customers

Strategically located around the globe, supported by a growing network of international partners.
We are seeking reliable distributors, wholesalers, and agents worldwide to join us for mutual growth and success.

Questions?
We’re here for you.

Contact us

  • Whatsapp : +86 18015555136

  • Wechat : +86 18015555136

  • Mobile : +86 18015555136

  • Email : sales@uolen-online.com

  • Add : 1177 Yunlian South Road, WujiangDistrict, Suzhou City, Jiangsu Province, China

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