1) ISO9001:2008 TUV 2) Hight water adsorption 3) High stength 4) Low dust... 4A Molecular sieve Powder UOP 4A Molecular sieve powder Chemical Formula Na12 [(AlO2)12(SiO2)12].XH2O Application: It is used commercially in deep drying natural gas alkanet; it is also used for dehydration of various of gases and liquids, refrigerant, medicine, electronic components and changeable substance, ...