Silica gel desiccant is a kind of hygroscopic material, English Name: silica gel desiccant. It can protect the storage in sealed containers from mildew, corrosion and rust. Because of its environmental protection and direct contact with food, it is widely used in drugs, machinery, shoes and hats, tea, seeds, clothing, handbags, furniture, toys, handicrafts, cultural relics archives, photographic equipment, gifts Wood products, lighting, precision instruments, electronics, computer containers and other items, the static adsorption of the sealed space of packaging, sealing and sealing removes moisture, controls the relative humidity, and has the effect of moisture and mildew prevention.