HR NANO FILM.made from nano-ceramics materials which possesses properties of spectrum absorbing selectivity, can effectively block the infrared ray. This nano- ceramic film is new series we made in 2022, it is cost-effective, high definition, high heat rejection, factory limited warranty. Product Features 1.UV-cut; protect our skin; anti-aging of indoor items 2.High Definition, High Rejection 3.Protect people from getting hurt by the sudden splash of broken glass pieces 4.Strengthen window glass; anti-explosion 5.Avoid spontaneous explosion of tempered glass 6.Anti-scratch; durable 7. Thickness 2mil