Orange silica gel, the appearance of orange yellow, its main component is silica, color changes with humidity, not affected by moisture for orange yellow, with its own adsorption of water and gradually become green, dark green. In addition to the properties of blue glue, orange glue also has the advantages of no cobalt chloride, non-toxic and harmless. With the use, used to indicate the degree of desiccant moisture absorption, in order to determine the relative humidity of the environment. Products are widely used in precision instruments, medicine, petrochemical, food, clothing, leather, household appliances and other industrial gases.