Solenoid Valve used in controlling the direction of the air source so as the actuator to fulfill the action. ISO9001:2000 certified. we are making 4V series,3V series,4M series, XQ series, QS series Solenoid Valve. we are making 4A series,3A series, Q series Air control valve. also we produce Hand Valve(4H series, XQ series , HV series, 4R series,3R series , K series, FV series ) Mechanical Valve (XQ series, MOV series, JM series) All the manufacturer. Made in china