The Silica gel desiccant packet is a different kind of silica gel packed in moisture-permeable sachets. The main raw material silica gel is a high-microporous structure of hydrated silica. It is non-toxic, odorless, odorless, chemically stable, and has strong moisture absorption properties. A highly active adsorption material. It is usually prepared by reacting sodium silicate with sulfuric acid and undergoing a series of post-treatment processes such as aging and acid foaming.