Zhejiang Wandun Refrigeration Co., Ltd. (hereinafter referred to as Wandun Refrigeration Co., Ltd.) is a professional unit engaged in the manufacturing and research and development of precision metal parts for air conditioning refrigeration. It was founded in 2009 and is located in Meizhu Industrial Park. The registered capital of the company is 41.3 million yuan.
The company's products mainly consist of globe valves, supplemented by precision metal accessories for air conditioning such as connecting nuts, solenoid valves, small U-tubes, square valves, one-way valves, pipe fittings, valve stems, etc. They are mainly used in household and commercial air conditioners. Adhering to the principle that quality is the life of an enterprise, we have established the quality concept of "quality starts from design" and have passed the ISO9001 quality management system certification. We have established stable, close, and long-term cooperative relationships with well-known domestic air conditioning manufacturers, with major clients including Midea, Gree, Haier, and AUX TCL、LG、 Hisense, Kelon, Galanz, etc. The company's product quality is excellent and stable, and has received unanimous praise from the domestic and foreign industries. Its main products, globe valves and connecting nuts, have a market share ranking among the top four in the country and are expected to enter the top three through efforts.

The company currently has over 300 employees, including more than 70 professional technical and management talents with college degrees or above. It has a provincial-level high-tech enterprise research and development center, which carries out activities such as technological innovation, production process innovation, improvement of production equipment, improvement of production environment, and enhancement of job efficiency. As of December 2023, it has successfully applied for 1 invention patent and 25 utility model patents, and is a high growth technology-based small and medium-sized enterprise in Zhejiang Province. In 2019, it was recognized as a national high-tech enterprise, and in 2022, it was rated as a specialized, refined, and new small and medium-sized enterprise in Zhejiang Province.

Wandun Refrigeration Co., Ltd. was officially listed on the National Equities Exchange and Quotations on August 10, 2016, making it the ninth company in Xinchang to be listed on the New Third Board. We have signed strategic cooperation agreements with Zhejiang Securities, Tianjian Certified Public Accountants, and Guofeng Law Firm, and reported our proposed listing plan to the Xinchang County Government.

Wandun Refrigeration Co., Ltd. has four wholly-owned subsidiaries: Zhejiang Sanrui Automotive Technology Co., Ltd., Zhejiang Sanrui Xiangxue Chongye Co., Ltd., Zhejiang Sanrui Copper Industry Co., Ltd., and Wuhu Wandun Intelligent Control Co., Ltd. Zhejiang Sanrui Automotive Technology Co., Ltd. has been jointly developing Busbar products (copper busbars) with the Fortune Global 500 Tyco Group since 2018. This product is used in new energy vehicle battery packs for international first-line brands such as BMW, Porsche, Audi, Volkswagen, and exported to developed countries such as Germany. Starting from 2021, SanRui Automotive Technology has focused on exploring the domestic new energy vehicle market. In addition to its main product copper busbars, SanRui has also developed copper aluminum busbars, soft connections, body DC fast charging terminals Pin, AC charging terminals Pin, drive motor copper bars, connectors, new energy vehicle heat pump system components such as gas-liquid separators, storage tanks, and pipeline components. SanRui has entered the supply chain of important components for air conditioning systems in new energy vehicle three electric systems and heat pump systems.