It is best to learn automotive sheet metal knowledge first, because after learning automotive sheet metal knowledge, the flatness of your touch panel will be much better. In the process of learning, we must work harder, be diligent, persist and be patient, so as to complete the learning goal quickly. After learning automotive sheet metal, your whole hand will be highly balanced, so when learning to spray, whether it is scraping, polishing or painting. You can also master the spraying technology faster and better!