Pouch Pack Colorless Silica Gel Drying Agent non-toxic,tasteless,no pollution strong adsorption performance,chemical stability Brief Introduce:Pouch Pack Transparent Silica Gel Drying Agent is a highly active adsorption material, usually obtained from the reaction of sodium silicate and sulfuric acid, and the aging, acid bubble and a series of post-processing process. Silica gel is amorphous ...