Color-changing silica gel possesses the adsorption and moisture-proofing effects of fine-pore silica gel. Its characteristic is that during the moisture absorption process, it turns light blue as moisture absorption increases, and eventually becomes light red or light pink. It can both indicate environmental humidity and visually show whether a new desiccant needs to be replaced.

Blue silica gel has the adsorption and moisture-proof effect of narrow pore silica gel, It is characterized by the moisture absorption process, it can become Light blue with the increase of moisture absorption, and finally become light red or light pink. It can indicate the humidity of the environment and also visually show whether a new desiccant needs to be replaced.

Color-changing silica gel is widely used for moisture-proof packaging in transformers, electrical cabinets, precision instruments, leather goods, clothing, and household appliances. It can be used alone as a desiccant or in combination with fine-pore silica gel.