Shanghai Fengshen Refrigeration Controls Co., Ltd. specializes in the development and manufacturing of automatic controller,Website:http://www.fs-controls.com, which matches refrigerator, air conditioner, boiler, air compressor, and fire control, etc. in use. Our products include : solenoid valve,discharge solenoid valve,thermostatic expansion valve,bidirectional thermostatic expansion valve, temperature responsive expansion valve ,liquid injection valve,pressure controlled water valve, temperature controlled water valve, constant pressure expansion valve, pressure control, differential pressure control, temperature control, flow switch,oil flow switches and fluid sight glass, etc.