Shanghai Fengshen Refrigeration Controls Co., Ltd. specializes in the development and manufacturing of automatic controllers, which matches refrigerators, air conditioners, boilers, air compressors, and fire control in use. Our products include solenoid valves, bi-flow solenoid valves, discharge solenoid valves, thermostatic expansion valves, bi-flow thermostatic expansion valves, temperature responsive expansion valves, liquid injection valves, pressure controlled water valves, temperature controlled water valves, constant pressure expansion valves, pressure controls, differential pressure...