Sanhe Tongfei Refrigeration Co., Ltd.

Company Introduce

Founded in 2001 and listed on the GEM of Shenzhen Stock Exchange (stock referred to as "Tongfei Stock", stock code "300990"), Sanhe Tongfei Refrigeration Co., Ltd. is headquartered in Sanhe City, Hebei Province. The company focuses on technological innovation and professional development of industrial temperature control, and devotes itself to the research and development of industrial temperature control equipment. Liquid constant temperature equipment, electrical box constant temperature device, pure water cooling unit and special heat exchanger. The products and solutions are mainly used in CNC equipment, laser, power electronics, energy storage, semiconductor, data center, hydrogen energy, new energy vehicles (charging), medical equipment, oil and gas storage and transportation and other industrial fields. The company has won the honors of advanced collective of national industry and information system, green factory of Ministry of Industry and Information Technology, etc; Hebei Industrial Refrigeration Equipment Industry Technology Research Institute and other provincial and municipal R & D platforms have been established successively, and the results have been transformed. In 2017, Atfu (ATF), a wholly-owned subsidiary of Germany, was established. In 2019, Beijing Branch was established. In 2021, it was successfully listed on the GEM of Shenzhen Stock Exchange. In 2022, the factory area of intelligent fluid control equipment was expanded. In 2023, a service office in the United States was set up, and in 2024, the construction of a digital factory was started. The company's factory covers an area of about 220,000 square meters, equipped with 22 digital production lines, forming an industrial pattern of "R & D-manufacturing-sales-service". In 2025, Shanghai, Shenzhen, Hangzhou and Tianjin branches were established, and Singapore subsidiaries and Thai production bases were established in Southeast Asia to accelerate the layout of various industries. At the beginning of 2026, the headquarters of Suzhou Tongfei South was established.

Variable frequency oil cooler

Main parameters of exhibits: Small footprint, easy to install on the side or back of the machine tool; The coaxial heat exchanger can pass impurity fluid below 3mm; Frequency conversion + low GWP refrigerant R454C →, comply with European regulations. Features of exhibits: The reliability is high, the oil temperature control is stable, and the anti-blocking performance is strong; The traditional plate heat exchanger is easy to be blocked in the oil containing impurities, the coaxial heat exchanger is perfectly solved, the problem of high maintenance cost (frequent cleaning of filters) is improved, and the frequency conversion reduces the fluctuation of oil temperature caused by the change of working conditions.

Frequency conversion water cooling machine

Main parameters of exhibits: Full frequency conversion control, high energy efficiency, in line with the European energy-saving trend; Use R454C to meet F-gas 2027 in advance; Can be used for cleaning media such as water, antifreeze and the like, and is universal for multiple scenes; Product features, cooling capacity 5kW, suitable for multi-axis machining center, high-precision equipment, high energy efficiency, low noise, frequency conversion control to achieve ± 0.05 ~ stability. Features of exhibits: The energy consumption of the traditional fixed frequency water cooler is high: the frequency conversion can obviously reduce the power consumption of the whole machine, and the temperature control stability is excellent; Medium and large cooling capacity main models with high energy efficiency and low GWP; Water cooling solution of choice for machine tool plants in Europe.

Cutting fluid cooler

Main parameters of exhibits: The coil is made of 304 stainless steel, which has excellent corrosion resistance and is convenient for maintenance. At the same time, the shape of the coil is a square coil, and the square coil can effectively reduce the height of the coil (the lower bracket is 375-700 mm) to adapt to more application environments; The applicable medium is wide. It can be applied to cooling media such as water-based cutting fluid with oil content less than or equal to 5%, grinding oil with viscosity less than or equal to 40cSt, and spindle oil with viscosity less than or equal to 32cSt, so as to improve the application range of customers; Adopt the environmental protection design of the micro-channel heat exchanger, reduce the refrigerant charge, suitable for ultra-high ambient temperature (5-50 ℃). Features of exhibits: Efficient refrigeration, low carbon peer, R454C environmental protection refrigerant gives industry green production. The global warming potential (GWP) of R454C refrigerant is only 148 ≤ 150, and the heat exchange efficiency is increased by 10% by seamlessly replacing R407C; Frequency conversion and energy saving. Compared with AC fixed frequency, the comprehensive COP of DC frequency conversion is increased by 50%, which greatly reduces power consumption. The unit can automatically adjust the operation state according to the ambient temperature to ensure that the system always operates at the best efficiency.

Air/water heat exchanger

Main parameters of exhibits: RS485 communication interface is provided to realize the communication function with the host; Products with heating function adopt advanced PTC heating elements, which can automatically heat up in low temperature environment and have good self-control temperature characteristics. Features of exhibits: Product installation methods are wall-mounted, embedded, door-mounted, each installation method has a variety of specifications to choose from; Completely independent closed air circulation inside and outside to prevent dust, oil mist, moisture, etc. from entering the electrical box; Effectively control the temperature and humidity in the electrical box to prevent premature aging and failure of electrical components. The controller is easy to operate and has complete functions. The temperature setting can be adjusted according to actual needs. It provides a variety of protection functions and passive alarm terminals to transmit fault signals to the CNC system of the machine tool.

Industrial air conditioning

Main parameters of exhibits: Installation form: the weight of the whole machine is lighter, and it is compatible with the installation of multi-form holes; For low vibration value, measures such as adding shock absorption pipe and fan shock absorption pad shall be taken. At present, the optimized vibration value can be reduced to less than 1.0mm/s; Low noise: select low noise fan and centrifugal fan to make the noise value lower than level of peers; Environmental protection: R513A refrigerant, GWP value is more in line with future environmental protection requirements. Features of exhibits: Remote control: with remote communication signal, the terminal software can be used to remotely monitor the temperature of the electric cabinet and the state of the air conditioner. More reliable performance: φ7 copper tube, more professional pipeline design and flow channel layout are adopted, so that the performance advantages of the whole machine are brought into full play.

All-in-one cooling machine

Main parameters of exhibits: Efficient integration, all-round cooling; With powerful synchronous cooling capacity, the equipment can provide stable and independent temperature control for the core components of CNC machine tools-spindle, hydraulic station and electrical control cabinet at the same time. The super-efficient liquid cooling heat exchange can accurately take away the excess heat generated by each heat source to ensure the lasting precision of the spindle, the stable operation of the hydraulic system and the reliable operation of the electrical components. Features of exhibits: It simplifies the system configuration, realizes the collaborative management of multiple heat sources, and comprehensively improves the efficiency and stability of equipment operation; The all-in-one chiller is for space optimization, system reliability and energy efficiency management.

Main products

The company focuses on industrial temperature control technology innovation and professional development, devotes itself to the research and development, production, sales and service of industrial temperature control equipment, and is a professional industrial temperature control integrated solution service provider in China. It has formed four product series of liquid constant temperature equipment, electric box constant temperature device, pure water cooling unit and special heat exchanger. The products and solutions are mainly used in numerical control equipment, laser, power electronics, energy storage, semiconductor, data center, hydrogen energy, new energy vehicles (charging), medical equipment, oil and gas storage and transportation and other industrial fields, and constantly broaden the road of industrial development.