What should I do if the plastic protective film of the anti theft door cannot be torn off?

1: If it is a large area of protective film, in order to avoid the protective film tearing unsightly, it is recommended to use an angle grinder to install a wire brush head to thoroughly polish the door and then re-paint, because simple removal will make the door ugly and will also destroy the paint layer and make the door rusty. The stainless steel door is also scalded with a towel and boiling water for a while, and then torn by hand.

Rub vigorously with a slightly damp towel, don't use a steel wire ball brush, the paint will fall off, and the paint will smell bad if you touch up the paint later.