2.0 to 2.8mm molecular sieve 10 years experience for 3A, 4A,5A, ... 13X drying,absorbent,cleaning ect. ISO9001:2000 product2.0 to 2.8mm molecular sieveProduct descriptionMolecular sieve is a material containing tiny ... kerosen and the liquid hydrocarbon Package can meet individrual requirements 2.0 to 2.8mm molecular sieve