It has been ten years since the goal was achieved. If I don't have this strength, I can't get along with it at all.

Since I have tried some courses and feel good, I can learn a little. Why not pursue them? If you work hard, you won't learn much, and you can't say that you will become a master. Finding a good job is definitely no problem.

The programmable controller produced by Siemens in Germany is also widely used in China, including metallurgy, chemical industry, printing production line and other fields. Siemens PLC products include LOGO, S7-200, S7- 1200, S7-300, S7-400, etc. Siemens S7 series PLC has the advantages of small size, high speed, standardization, network communication, more powerful function and high reliability. S7 series PLC products can be divided into micro PLC (such as S7-200), small PLC (such as S7-300) and PLC with medium and high performance requirements (such as S7-400).