German GSR company, founded in 1971 by W.Emann, specializing in solenoid valve, pneumatic valve, electric valve and other valve products development and manufacturing. In addition to more than 2000 kinds of conventional products, can also provide, high temperature (350℃), high pressure (350bar) and large diameter (DN400) solenoid valve and pneumatic valve, electric valve, and according to the user's requirements, design special specifications of electric valve.