zeolite catalyst 1.ISO9001;2000 2.type:3A, 4A,5A, 13X 3.Size;3.0 to 3.3mm ... (as when used in dehydration), or heating under high vacuum.3A (pore size 3 Å): Adsorbs NH3, H2O, (not C2H6), good for ... kerosen and the liquid hydrocarbon Package can meet individrual requirements zeolite catalyst