Mainly used as oxidant and catalyst for fireworks; Used as antirust pigment in coating industry; In the glass industry, improve the optical properties and radiation resistance of glass; In the enamel industry, it is used as a flux to reduce the melting point, surface tension and viscosity of glaze and improve the gloss of products; It is used to check the gap between clamping surfaces in general mold manufacturing, and used in radio components, storage batteries, etc. in electronic industry.