Coating for Environmental-Friendly Chromic Silicon Gel, Cobalt-Free, 3-5mm Desiccant

Co-free color-changing silica gel, also known as orange color-changing silica gel or indicator silica gel, is a type of color-changing silica gel made from fine-pored silica gel by dyeing with an inorganic salt mixture. It changes color after absorbing moisture, allowing for observation of moisture saturation. It is orange before moisture absorption and turns dark green when saturated. After the silica gel is saturated with moisture, it can be placed in a microwave oven or an oven to achieve the effect of reuse.