Zhejiang Dun'an Artificial Environment Co., Ltd engages in the research and development, production, and sale of refrigeration accessories, refrigeration and air-conditioning equipment, and core components for thermal management of new energy vehicles in China and internationally. The company offers refrigeration accessories, including stop valves, four-way valves, electronic expansion valves, solenoid valves, liquid storage tanks, small pressure vessels, heat exchangers, integrated pipelines components, and other products, which are used in household air conditioners, commercial air conditioners, and other fields. It also provides refrigeration and air-conditioning equipment that are used in commercial buildings, industrial production, precision manufacturing, central heating, hospital medical treatment, pharmaceuticals, nuclear power, rail transportation, energy storage, cold chain, and other industries. In addition, the company offers refrigerant side valves, water side pumps and valves, OBD intelligent electronic control products, etc.