Personally, drawing is a good technique. Although the paint is toxic, personal attention to the use of labor supplies can still minimize the injury.
The technical update of painting is not as fast as that of machine repair. We have a jargon called "Mercedes-Benz BMW and QQ, and the technology of painting and painting is almost the same", so compared with machine maintenance, it should be very stable to learn.
Usually you can reach the level of intermediate workers in two to three years, and your salary should be around 3 thousand yuan. After five years, you can reach the master's level of technician, and your salary should be at least 5 thousand. The speed of this progress and the final salary are closely related to the personal efforts and level. I hope I can stick to it.