There are many retouching techniques all over the country. Generally speaking, you can be an apprentice in a local repair shop and grind your time slowly. After three to five years, I can basically come out to work. However, in recent years, the relatively new technology is the rapid paint touch-up technology of Shenfeng Automobile. It takes only one hour to deliver the car from sheet metal to paint mixing to painting, and the technology is also one-on-one training. You can try to understand.