Shanghai Guanlong Valve Machinery Co., Ltd.: a well-known enterprise in the domestic valve industry, whose products include regulating valves, ball valves and butterfly valves.
Shanghai Zhong Qi Valve Manufacturing Co., Ltd.: A well-known enterprise in the domestic valve industry, whose products include check valves, safety valves and pressure reducing valves.
Sanhua Holding Group Co., Ltd.: a well-known enterprise in the domestic valve industry, and its products include temperature control valves, steam traps and cut-off valves.
Chaoda Valve Group Co., Ltd.: a well-known enterprise in the domestic valve industry, and its products include ball valves, butterfly valves and globe valves.