Which parts of the car need to be numbered or identified by a marking machine? I hope people in the industry can give me an explanation, thank you very much! ! ! !

Generally, all assembly parts need to be marked or laser engraved, such as cylinder head, cylinder block, starter, generator, ECU, electronic throttle and so on.

The serial number is marked to check whether the original car is equipped with accessories. After the repair station replaces new parts, the old and new part numbers of the parts need to be settled with the manufacturer.