Belonging to window film. Solar film is also called thermal insulation film. The early solar film was used to stick on the building window glass, which is the so-called "building film". Later, a "safety film" with large thickness and strong explosion-proof function and a "car film" for automobiles were developed. Related to this is the explosion-proof film developed on the basis of solar film; From the application scope, solar films can be divided into building films, automobile films, maritime films and aerospace technology films. The film pasted on the surface of automobile glass is commonly called explosion-proof film, originally called solar film, so as the name implies, automobile film is used to deal with the scorching sun and ultraviolet rays in summer. Explosion-proof membrane has explosion-proof function besides heat insulation and light isolation. High-quality explosion-proof film is based on special polyester film. The film itself has strong toughness and is equipped with special pressure-sensitive adhesive. When an accident occurs, the broken glass will be stuck by the film and will not splash and hurt people. Now the automobile explosion-proof membrane also has the function of one-way perspective and glare reduction. Common brands of amber optical nano ceramic membrane, Gu Wei, 3M, etc.