Complex "Mechanical Worker"

I first met "Mechanical Worker" in the early 1980s. At that time, I just entered the workshop and my master booked a "Mechanical Worker" (cold processing). At that time, "Mechanical Worker" was still a 32-page booklet. . Whenever there is time, the master loves to sit by the tool cabinet and read the book. Don't look at it, the content inside is very rich. I remember that in the annual factory technology reform, the master can always get one or two awards. Therefore, influenced by the master, I also especially like to watch "Mechanical