The vermicelli itself is dry goods, and the water content is below 2%. Generally, the package will not deteriorate and absorb moisture if it is airtight.

Desiccant is a kind of adsorbent with strong adsorption capacity, and silica gel desiccant is silicon dioxide formed by artificial chemical reaction of sodium sulfate. This synthetic chemical has the characteristics of porous internal structure and irregular granular external structure. Numerous capillary gap networks formed between internal molecules can form so-called capillary absorption and knotting, so that the molecules of chemicals such as water, alcohol and hydrocarbons around them can be effectively absorbed. People use these physical characteristics of silica gel to make silica gel desiccant become the best absorbent today.