Orange silica gel is an environmentally friendly desiccant, with the chemical name cobalt free color changing silica gel. It has the characteristics of being non-toxic, odorless, and chemically stable. 

This substance is presented as orange or semi transparent glassy particles, which intuitively reflect its moisture absorption state through color changes: gradually changing from initial orange yellow to light green until dark green, indicating the need for replacement or regeneration treatment. 

With its high adsorption performance, excellent thermal stability, and recyclability, it is widely used in the field of precision equipment preservation such as moisture-proof photography equipment. It can accurately control the environmental humidity within a suitable range of 30% -50%