ZZhejiang Sanrong Refrigeration Components Co. Ltd are professional refrigeration manufactory in creation, Exploitation, Design, Producing and sale. Products: Heat pump 4- Way reversing valves, Solenoid valves, Ball valves, Check valves, Filter driers, Oil separators, Suction line separators, Heat exchanger, Accumulator, Compressor, Timer, Coils for valves, Thermal expansion valve, Diaphragm magnetic valve Quality Certificate: Our products have passed ISO9001: 2000 Quality Administration System, CE and UL approval. They have entered Carrier, Trane, Mcquay, Dumham- Bush, Electrolux, York, Etc,