The thin side of the film. According to relevant information, the old film of automobile shovel is the same as the film of mobile phone, and the thick film is only used for pasting. Generally, when changing the car film, the film pasting master will heat the old film with a hot air gun in the process of tearing the old film, so that the old film can be easily torn off without hurting the heating wire. It is generally better for professionals to replace the car film.