There are two methods to remove it completely. 1 You can heat it, dry it and tear it with a electric hair dryer. 2 you can smear it with a cloth dipped in acetic ether (a chemical solvent that specifically dissolves the protective film glue), but it should be noted that the stainless steel surface should be cleaned with water in time after the film is torn off.
I have dealt with the stainless steel mirror panel before. The method may be similar. We wipe it with a towel dipped into the warm water mixed with detergent and then wipe it with a clean towel again.
There are two methods to remove it completely. 1 You can heat it, dry it and tear it with a electric hair dryer. 2 you can smear it with a cloth dipped in acetic ether (a chemical solvent that specifically dissolves the protective film glue), but it should be noted that the stainless steel surface should be cleaned with water in time after the film is torn off.