The so-called car depression repair, also known as micro-sheet metal, is different from the traditional sheet metal painting process. It is based on the principles of optics, physics, and mechanics. It uses the principle of leverage to make the body different in size and depth due to various external reasons. The depression is flat and repaired. After returning to the factory shape. As shown in the figure below
In fact, depression repair technology has been used abroad for many years. It is said that it has been in the United States for decades. But China has only been introduced in recent years, and I did it once five years ago, so it's fairly clear that I was shocked by the effect of the restoration. But it hasn't been developed in the past few years, and it's still a "niche" repair method. Even when I found the repair shop that made me a depression five years ago, I was told to cancel the business now. I really can't understand why depression repair technology can not be vigorously promoted?