The so-called automobile dent repair technology is also called micro-sheet metal, and sometimes it is also called seamless nondestructive technology. Anyway, repairing the concave surface of the car body does not have to destroy the original car paint. The principle is actually very simple, that is, based on optics and mechanics, using the lever principle, the pits with different depths are slowly restored to their original appearance. You can see the picture below at a glance.

Nondestructive repair is limited to dents with undamaged paint. If the car paint is broken, it can only be painted with sheet metal. If there are only minor scratches and dents, it is recommended to repair the dents of the car. After all, the original painting is a treasure. Once painted, the car will depreciate immediately.