Violet tungsten oxide nanoparticles for building glass thermal insulation coating are important photochromic nano particles that can be synthesized by solvothermal method. And the obtained transparent heat-insulating coating has a good infrared absorption performance in the near-infrared region and a good ultraviolet shielding property in the ultraviolet region.

Violet tungsten oxide for preparation of heat insulating window film is an important functional material in the field of heat insulation. The heat-insulating film of violet tungsten oxide nano particles can make the building glass window become an energy-saving window or a smart window, which is UV-resistant with long using life. Also, such energy-saving glass can ensure the transmission of visible light without delay.

Violet tungsten oxide for smart window film is an environmentally friendly smart window film medium. It is violet tungsten oxide nano powder that has made a new type of heat insulating car film popular. It should be noted that with the development of society and the advancement of science and technology, automobiles have gradually become an important means of transportation for people's life, work and tourism. At present, the annual sales volume of cars alone reaches 80 million.

Violet tungsten oxide for building thermal insulating glass is a kind of functional particles with excellent optical properties. The obtained transparent heat-insulating glass is widely used in building energy-saving renovation due to its advantages of high heat insulation, environmental protection, energy conservation, UV resistance and easy cleaning.