I further learned PLC programming, completed independent PLC programming, and drew schematics with my colleagues. Cooperated with colleagues to modify the PLC program of the company's production line, and realized the product traceability, specifically to the lathe, rolling machine, milling machine and the processing time of different processes.

Followed the Electrical Engineer to study electrical components and their working principles and applications, independent electrical drawings for different usage scenarios, device selection, and functional testing.Learned the operation of Siemens PLC (Programmable Logic Controller) and gained an understanding of the degree of automation in industrial sites.