high quality molecular sieve 1)10 years professional manufacturer for 3A, 4A,5A, 13X 2)drying,absorbent,cleaning ect. producthigh quality molecular sieveProduct ... 0.6520-210.3-0.5Dehydration, desulfurization and purification of air, natural gas and oil, in oxygen making and hydrogen making ... 55-0.6523-240.3-0.5Dry and decarbonation in air separationCu-13X0.50-0.6023-240.3-0.5Absorbent for ...