Car film is a kind of film-like object stuck on the front and rear windshield, side window and skylight of the vehicle and stuck in the glass. Can block ultraviolet rays, block some heat, and prevent personal injury caused by sudden bursting of glass. At the same time, according to the one-way perspective performance of the solar film, the purpose of protecting personal privacy can be achieved. The following are the methods and steps of car film pasting: 1. Before pasting, the necessary parts in the car must be covered to prevent liquid from infiltrating. Sprayed cleaning liquid and lubricating liquid will affect decorative parts such as vehicle-mounted electronic equipment and interior seats. The front of the film faces the window. Clean the outer surface (focus on cleaning the inner surface and glass sealant area). This is mainly to prevent dirt or other construction quality problems between the thermal insulation film and the window glass after pasting, and to ensure the perfect combination of pasting and glass. 3. Pre-edit the movie. Measure the dimensions of the front and rear windshields with a ruler, and cut the film according to the measured dimensions. 4. Spray the installation liquid. It can avoid gray spots, reduce edge corrosion, obtain the viscosity needed for condensation, and achieve better construction effect. 5. Dry baking and wet baking. Dry-bake the insulating film first to make the insulating film fully pre-shrink. In order to further improve the application of thermal insulation film, it is necessary to wet bake and reshape the thermal insulation film. 6. Extrude the installation liquid. In the process of cleaning the installation liquid with wiper blades, try to scrape the installation liquid between the heat insulation film and the window glass to reduce the drying time of the heat insulation film and obtain better bonding effect, overall performance and visual effect. 7. Check after posting. Look for dust and bubbles in the whole insulation film, see if the corners are stuck firmly, and sit in the car to see if there are any places that affect the line of sight (especially the front and side guardrails). After pasting the film, it is recommended not to lift the glass at will within 48 hours.