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Which part of the elevator control panel is easy to be scratched in the production of sheet metal workshop, and what are the solutions?
If your material is made up of

304 stainless steel

Then its surface is covered with a film, and it is welding that must tear off the film during the processing, so it is possible to scratch the surface in the process after the welding process. As for the solution, the workers were told not to scratch it.