A Type Silica Gel***Silica gel is a highly active adsorption material, which is usually made from the reaction of sodium silicate with sulfuric acid after a series of post-treatment processes.Shape: glass-like pellets or lumpsColor: blue or light blueTurning from blue to pink after absorbing moisture.* ApplicationMainly used for drying and indicating the humidity, widely used in Precision instruments, Pharmaceutical industry, Petroleum industry, Chemical industry, Food industry, Clothing industry, Leather industry, Household appliances industry, Aviation industry, High-rise buildings, Power industry, and other industrial gases.