Building film is a type of glass film that is usually applied to the surface of building glass to improve its performance. The material of building film is mainly a multi-layer PET plastic film, which is processed by dyeing, magnetron sputtering, lamination and other processes on multi-layer ultra-thin and high transparent polyester film. It is adhered to the surface of building glass and other materials through adhesive backing.

According to the different areas of application, the current glass window film is roughly divided into three categories: architectural window film, automotive window film, safety glass window film.