we're honoured to introduce ourselves as a manufacturing specializing in air couplers, fittings, connectors, air hose, valve and regulators, tyre chucks and tire gauges, solenoid valves, cylinders , air units etc,we adopts advanced equipments to guarantee the quality products together with strict quality control system, our products are honored for good quality, favorite prices and in time delivery in board and aboard market.our website provides detailed information including drawings, pictures, parameters, and so on for all hundreds products, very conveninet. Our website : http://www.weidapneumatic.com pls feel free to contact with us .