Injection molding or EDM knowledge ... help me.

I make molds. Moulds are divided into locksmith, wire cutting, polishing, EDM and machining, among which locksmith and machining are the most tiring and dangerous. But it's best to get a quick upgrade and salary increase after studying well, but eating is very hard. Wire cutting is the most common, followed by wire cutting and wire cutting. The salary is good, too. It's much easier. People who learn EDM quickly, but there is no danger in doing it seriously. The salary of a good company leader is about 3000 yuan, which is not high for female employees. If locksmiths can read drawings and learn drawing and design, the future will come. Thank you. If you don't understand anything +QQ4045942 19, I will help you online 24 hours a day.