... . Molecular sieve for powder crystal, metallic luster, hardness is 3 ~ 5, relative density is 2 ~ 2.8, color, natural zeolite ... 2. Molecular sieve has a lot of specific surface area, 300 ~ 1000m2 / g, inside the crystal surface height polarization, for pyrethroids ... and catalytic properties, thus made different properties of molecular sieve catalyst.Use:This product used as desiccantWe supply ...