Equipment maintenance is mainly to help solve problems on the spot when there are problems or abnormalities in factory equipment. If it can't be solved, go to the equipment supplier to deal with it together. Generally speaking, factories are more relaxed and have more overtime. There is also oil and water in it. The most unpleasant thing is that it needs to work during the day and at night. In other words, you should plan to work the night shift, but it's just a waste of time and usually nothing.
At present, overtime is generally controlled at 36 hours in the group, and may increase to 60 hours in the comprehensive department, which is a better department. How much money you get each month depends on your basic salary. Oil and water are things like equipment repair or maintenance. You'll know when you go