USed for refrigerant,molecular sieve,XH molecular sieve for refrigerant,desiccant XH-5 molecular sieve is used mainly for refrigerant R12 and R22 in order to desiccate, purify and improve refrigeration effect.XH-7 molecular sieve is used to dehydration and desiccation for new type R-139, butane and other special refrigerants, which are used in refrigeratory, deepfreeze and air conditioning.XH-9 ...