What causes bubbles to appear all over the car film after installation under sunlight?

[OWyatt]

The reason for bubbles appearing on the car film after installation under sunlight may be due to the substandard quality of the film itself, which is related to the installation environment and the technician's skill. Functions of car film: Car film can block most ultraviolet rays, preventing UV damage to people and objects. For cars, ultraviolet rays accelerate the aging and fading of interior components such as seats and the control console, and may even cause wiring faults. Post-installation precautions: Avoid washing the car within three days after film installation to prevent the film from peeling off due to moisture. After the car film is installed, do not roll down the side windows for 24 hours in summer and 48 to 72 hours in winter, as the film may not have fully adhered and is prone to displacement. If bubbles are found, they should be addressed within 24 hours at a professional car beauty and maintenance shop.