Activated carbon is a porous material, it is a large surface area, strong adsorption, can desulfurization, benzene, deodorization, decolorization, but also players in the removal of certain chemicals in liquid or vapor impurities can be widely used in chemical, oil, gas, metallurgy, nuclear, water treatment, food, textile, medicine, urban construction and environmental protection industries, and human life. 
 Zeolites are a class of crystalline aluminosilicate, because it has a uniform pore size and high surface area, so have many excellent features. (1) according to molecular size and shape of the adsorption of different options, that is, only those less than the molecular sieve adsorption pore size of the molecules. (2) for small polar molecules and unsaturated molecules, with selective absorption properties, the greater the polarity, the higher the unsaturation, the stronger the absorption of their choice. (3) has a strong water absorption. Even at the higher temperature, space velocity and the larger the case of low water content, there is still a very high water absorption capacity. At present, our company has produced and applied in industry are 3A, 4A, 5A, 10X, 13X and copper zeolite and other varieties.