This product is X-ρ-type alumina adsorbent, white ball, the ability to absorb water strong. Under certain operating conditions and regeneration conditions, its drying depth is higher than the dew point temperature of -40 ° C or less, which is a highly dry desiccant with a slight amount of water. Widely used in petrochemical gas, liquid drying, for the textile industry, oxygen industry and automation instrument wind dry, air separation industry, such as pressure swing adsorption. Because of the high net heat of the single molecule adsorption layer, it is very suitable for non-thermal regeneration devices