Why do cars have protective film？

1. It can effectively protect the car paint from scratches, collisions, acid rain, ultraviolet rays and other external factors, extending the life and gloss of the car paint.
2. It can improve the brightness and water repellency of the car paint, making the car body more beautiful and easy to clean.
3. It can isolate the car paint from the air contact, preventing the car paint from oxidizing, discoloring, and yellowing.
4. It can automatically repair minor scratches, with elastic memory function.
5. It can maintain the original factory paint condition, increasing the value retention rate of second-hand cars.