The product has the adsorption and moisture-proof effect of fine-pored silica gel, which is characterized in that in the process of moisture absorption, it can turn purple with the increase of moisture absorption, and finally turn light red. It can not only indicate the humidity of the environment, but also visually display whether it needs to be replaced with a new desiccant. It can be used alone as a desiccant, or it can be used in conjunction with fine-pored silica gel.
Classification: blue glue indicator, color-changing blue glue are divided into two types: spherical particles and block particles.