we are a manufacturer of infrigeration industry in hangzhou city ,China.we specilizes in manufacturing a varity of refrigerant gas and spare parts .REFRIGERANT GAS :R12.R22.R134A,R600 ,R406A R11.R400...REFRIGERATION PARTS :drier filter, FN series and QD series compressor, oil separator. drying coresdrying cylinders,hermetic and semi-hermetic compressor units, expansion valves, defrosting timer,compressor oil ,heat exchangers,ect.Our products enjoy fast sales in our domestic and win high praise .large quantities of our products are exported to Europe, Middle East, Austrilia,South Asia.