Shanghai Longline mechanical and Electrical Equipment Co., Ltd. was established in 2005, and its headquarters is located in Jiading, Shanghai District (Changsha, Xuzhou, Taiyuan Office), is dedicated to walking machinery hydraulic valve and non-standard Electro hydraulic integrated control system design, research and development, production, manufacturing and service of high-tech enterprises. yield Products include cartridge valve, balance valve, hydraulic lock, multi-channel valve and other hydraulic valves, while designing and manufacturing non-standard valves Group, as well as wireless remote control, electro-hydraulic integrated system.