White inorganic pigment. It is the strongest tinting power among white pigments, with excellent hiding power and color fastness, and is suitable for opaque white products. Rutile type is particularly suitable for plastic products used outdoors, and can give the products good light stability. Anatase type is mainly used for indoor products, but it has a slight blue light, high whiteness, strong hiding power, strong tinting power and good dispersibility. Titanium dioxide is widely used as a pigment for paint, paper, rubber, plastic, enamel, glass, cosmetics, ink, watercolor and oil paint, and can also be used in the manufacture of metallurgy, radio, ceramics, and welding rods. In recent years, it has been found that nano-scale titanium dioxide has certain special uses, such as sunscreen cosmetics, wood protection, food packaging materials, agricultural plastic films, natural fibers and artificial fibers, transparent external durable topcoats and effect pigments, and can also be used as an additive for high-efficiency photocatalysts, adsorbents, and solid lubricants.