Sunlong were founded in 1999. We offer one of the most comprehensive lines high-quality hydraulic cartridge valves for industrial equipment markets. our product was widely used to control force, speed, and motion such as check valvesã€pressure valvesã€flow ...

Tiehu Petroleum Machinery Co., Ltd. is an integrated petroleum machinery manufacturing enterprise specializing in the production of oil drilling equipments and has been one plants for supporting well control organized by China National Corporation. The company owned perfect quality ...