White spherical porous particles, uniform particle size, smooth surface, high mechanical strength, strong hygroscopicity, non-swelling and non-cracking after water absorption to maintain the original state, non-toxic, odorless, insoluble in water and ethanol.

Under certain operating conditions and regeneration conditions, the drying depth of the product is below dew point temperature - 70 degrees. The product can be used for gas drying in oxygen making industry, textile industry and electronic industry, drying of automatic instrument air, drying agent and purifier (dew point can reach - 40 degrees)% in chemical fertilizer and petrochemical industry, and pressure swing adsorption dew point can reach - 55 degrees in air separation industry. It is an efficient desiccant for deep drying of trace water and is very suitable for non-thermal and micro-thermal regeneration devices.

Activated alumina ball for desiccant (granularity can be processed according to user's requirements, from 1 to 15 mm).