The Indicator Silica Gel Moisture Absorber Bags is divided into blue gel indicator and orange silica gel. The orange appearance is orange glass-like particles. According to the shape of the particles, it can be divided into spherical and massive. It has the characteristic of changing its color from orange to dark green after absorbing moisture. This product is spherical or irregularly shaped particles. According to the different appearance, it is divided into three types: purple, orange or yellow. Its main component is silica, and its color changes with different humidity.