The series is divided into two kinds of anatase and rutile crystal appearance are white powder, relative density 0.83, purity greater than 99, the average particle size less than 100nm, chemically stable, insoluble in water, organic acid and weak inorganic acid, can be dissolved in sulfuric acid, alkali and hydrofluoric acid. A: HG-Ti02-01 can be used as the photocatalytic production of catalysts (anatase) is based on nano-TiO2 doped with some made of metal or metal oxide nano-powders. The powder in less than 400nm light irradiation, valence band electrons are sent to the conduction band electrons and holes formed on its surface and adsorption of the role of O2 and H2O to produce superoxide anion radical, these radicals light touch of the decomposition of harmful gases, organic pollutants and photocatalytic antibacterial function, can be widely used in air purification and sewage treatment and other fields. In addition, the product also has the products, low cost, good stability and high photocatalytic activity, absorbing the advantages of a wide range of light waves. Second: HG-Ti02-02 has better UV shielding effect (rutile). Mixed with zinc oxide may constitute a UV shielding agent. Under the action of UV and oxygen has a strong bactericidal ability. Can be widely used in sunscreen cosmetics, functional fiber, high-grade plastics and other fields. C: HG-Ti02-03 overall resistance of the product not only has the ability to shield ultraviolet (rutile), particle size less than 80nm, the specific surface area greater than 30m2 / g, feel fine, cool feeling strong, suitable for use in cosmetics as sunscreen agent. This product is hydrophilic (rutile).