Copper Tube, Heat Exchanger, Condensing Unit manufacturer / supplier in China, offering Factory Price R404A Refrigerant Gas HVAC Air Conditioner Gas, Wholesale R134A and Dme Blend Refrigerant Gas Replacement for R134A Lower Flammability Refrigerant, Fast Frezing 99.9% Purity Air Conditioner Refrigerant R134agas 13.6kg/30lbs and so on.