
Tungsten acid may be applied for heat insulating window glass, which provides for better user comfort and well-being and improves energy efficiency. Nano tungsten acid plays a role of heat insulation film on the window glass of vehicles. The heat insulating film provides over 99% UV blockage. In cars, the range of light transmission for this type of window glass is 50-60 times darker than a typical sunroof to twice as clear as an ordinary sunroof. Commercialization of heat insulating…