Silica gel desiccant is a physical adsorption desiccant rather than a chemical reaction moisture absorption desiccant, and silica gel is an FDA-approved desiccant material that can be directly in contact with food and drugs. Compared with other desiccant, silicone desiccant is better used in food moisture-proof. In addition to the above factors, the silica gel desiccant also has a strong hygroscopic ability, strong adsorption performance, the silica gel desiccant is all soaked in water, it will not melt. With, tasteless, no corrosion, no pollution characteristics, even if ingested will not be absorbed by the human body.