... and commercial refrigerators, iceboxes and etc.. XH-7 molecular sieve XH-7 molecular sieve is used to dehydration and desiccation ... in refrigeratory, deepfreeze and air conditioning.My factory production XH-7 is develops adapts the HFC-134a drying agent:• Chemistry ... ability aspect the before product.Along with the XH-7 commercialization,first time establishes the quality guarantee test method and ...