Introduction of thermostat :
The thermostat is a critical component in the engine cooling system, designed to precisely regulate coolant circulation and maintain the engine at its optimal operating temperature. Its reliable performance relies on the synergistic operation of high-quality core components, each engineered for specific functions and durability.
At the heart of the thermostat lies the temperature-sensitive element with paraffin wax, serving as the core temperature-control material. This paraffin wax exhibits excellent thermomechanical properties—expanding when heated and contracting when cooled. This thermal expansion and contraction directly drive the valve's opening and closing actions, forming the basis of the thermostat's temperature regulation capability.

Our strengths:
1.The valve and bracket are constructed from low carbon steel, which boasts exceptional rigidity. This material choice enables the assembly to withstand the pressure of the coolant effectively, ensuring smooth, stable, and precise valve movement without deformation, thus guaranteeing consistent circulation control.
2. A stainless steel push rod is responsible for transmitting the expansion force generated by the paraffin wax. Stainless steel is selected for its high structural strength and superior rust resistance, ensuring efficient force transmission even in the harsh, moisture-rich environment of the cooling system, while maintaining long-term operational integrity.
3. High-performance nitrile rubber sealing parts are integrated to enhance leak-tightness. These seals demonstrate excellent resistance to coolants and high temperatures, effectively preventing coolant leakage and ensuring complete blockage of the large circulation path when the valve is closed. This strict sealing performance is crucial for maintaining the small circulation efficiency during cold starts.

About us:
We are Sortech Trading (China·Guangzhou) Co., Ltd. it is an innovative company focused on the research and development and manufacturing of high-quality auto parts, hoping to provide customers around the world with excellent automobile engine thermostat and other products and services. We adhere to the concept of mold-opening manufacturing for special vehicles, so that each automobile engine thermostat (such as model A274) can be accurately adapted to specific engine needs and achieve precise temperature control. We always uphold the business philosophy of “innovation-driven, quality first”, and constantly pursue technological innovation and quality breakthroughs. With ten years of material expertise (such as high temperature PPS/PPA debugging) and efficient production capacity (relying on 60 injection molding machines and more than 10 welding equipment), we strive to become an industry leader in the field of automotive thermostats.

A: Our products have passed ISO/TS 16949 quality management system certification, and meet the European CE, Russian GOST and other regional standards. Specific certification can be provided according to customer needs.
A: Yes! Please provide your requirements or refer to our product catalogue on the website. We will send you detailed technical documents (including size, material, vehicle type, etc.).
A: The regular model is available in stock, and the delivery cycle is 3-5 working days; the production cycle of customized products needs to be confirmed according to the order.
A: Please provide the brand, model and year of the vehicle (such as BMW 2020), we will match the corresponding accessories.
A: We provide OEM number comparison service or verify compatibility through third-party tools.
A: The default quotation is the factory price (excluding tax). If you need FOB price, you need to specify the freight forwarder and bear the international freight, we will cooperate with you.
A: The larger the order volume, the higher the discount. For example: -MOQ 100 pieces: unit price $10. -MOQ 500 pieces: unit price $8. Specific step prices can be negotiated after the procurement plan is provided.
A: The quotation is not included in tax (tax number of customer is required for export tax exemption in China). If DDP (tax paid delivery) is required, additional tax confirmation is required.
A: You can send the purchase list by email or submit the order online (official website link), we will confirm within 24 hours.
A: The modification can be made free of charge before production; the cancellation during production will incur the material loss fee (30% of the order amount); the cancellation after delivery is not allowed.
A: The freight shall be borne by your company under FOB price; the cost to the destination port/denominated place shall be borne by us under CIF/DAP price.
A: To be provided: -Commercial invoice (including HS code). -Packing list. -Certificate of origin (FORM A). -Technical documents (e.g. product certification certificates). We can assist in preparing the documents, but the customer is responsible for customs clearance.
A: It can be agreed to take the spot selling price of the Bank of China at the time of signing the contract as the benchmark, or avoid the risk of volatility through forward exchange contracts.
A: 2 years and 60,000 kilometers, electronic components 1 year warranty.
A: Please provide photos, test report and batch number to confirm the quality problem: -Free replacement or repair within the warranty period (24 months); -Negotiate partial compensation for non-quality issues.
A: The return freight shall be borne (except for quality problems), and the return shall be confirmed by our quality inspection.
A: Provide multi-language installation video and graphic manual, complex accessories can arrange engineers for remote guidance.