What rubbish is sheet metal major?

Sheet metal is a mechanical specialty and belongs to manufacturing industry. If you learn well, you can do a lot, because there is little interest and study in this kind of work in recent years, especially in the manufacturing industry.

Sheet metal, a processing technology, has not been fully defined so far. According to a definition in foreign professional journals, it can be defined as: sheet metal is a comprehensive cold working technology for metal plates (usually less than 6mm), including cutting, punching/cutting/compounding, folding, riveting, splicing and forming (such as automobile body).