Serious demerits should be signed and fingerprinted. But under normal circumstances, the grass-roots management will not report the demerit in the production process, unless it is very serious, it will have little impact.
Or other departments sent an email notice and had to report it. As long as it's not annoying, the manager won't push you to the wall.
The year-end bonus will be damaged, but it depends on your boss's attitude towards you. If the boss is nice to you, it will be fine. If it is not good, it is hard to say. Wages will also go up. It depends on your boss.
If you are a regular worker, it doesn't matter. You won't get a raise for three years. No appreciation for three years. When the year-end bonus was cancelled, it had a great impact on cadres, who had many year-end bonuses.
If you have a big record, it seems to take a year to come in for the second time. If you come in again, the one in front will not be affected. The company's rule is that you will be suspended for three years without a raise.