Hangzhou Chunjiang Valve Co., Ltd.

Hangzhou Chunjiang Valve Co., Ltd., formerly Zhejiang Tonglu Valve General Factory, was founded in 1972 in the Tonglu Economic Development Zone of Zhejiang Province and has spent more than five decades specialising in valve R&D, design, manufacture, and system integration. The company covers 120 mu with an annual production capacity of 8,000 tonnes across more than 3,500 product varieties, including fire-fighting, industrial, water supply and drainage, and building automation valve systems.

It holds China's special equipment manufacturing licence, ISO 9001, ISO 14001, and ISO 45001 certifications, plus fire-product certification, US CUPC, EU CE, and UK WRAS approvals. A national high-tech enterprise and contributor to more than 30 national and industry standards, Chunjiang holds over 20 invention patents, supplies metro, nuclear, and government projects, exports to Germany, the United States, and the United Kingdom, and is a qualified supplier to CNNC and a core supplier to Siemens.