high quality molecular sieve 1)10 years professional manufacturer for 3A, 4A,5A, 13X 2)drying,absorbent,cleaning ect. producthigh quality molecular sieveProduct descriptionMolecular sieve is a material containing tiny pores of a precise and uniform size that is used as an for gas and liquid.Molecular sieves are often utilized in the industry, especially for the purification of gas streams andin ...