1.Description：A kind of alkali-metallic, silicon-aluminum compounds, It could absorb the molecules which critical diameter is not more than 4 angstroms.
2.Formula： Na2O Al2O3 2.0SiO2 4.5H2O
3.Properties：Molecular sieve 4A is usually used for in packaging of drugs, electronic components.Since 4A molecular sieve is more easier to be produced than 3A molecular sieve, 5A molecular sieve, 13X molecular sieve, it is more economic than other three desiccant. Molecular Sieve 4A have the shape of beads, pallets.
---Air, natural gas, alkanes, refrigerants and other gases and liquids are deeply dry；
---The preparation and purification of argon gas；
---The static drying of pharmaceutical packaging, electronic components and perishable substances；
---Paint, fuel, paint as dehydrating agent
5.Packing：Superbag, 25kg/carton, 160kg/drum or customized.