How can I get rid of the words posted on the back of the car? The paint is not damaged.

You can't use water, or the paint will definitely come off. Simply put, it is offset printing. I wonder if you have any friends who work in the hotel. There is a special cleaner called electrostatic precipitator in the hotel. This is only available in high-star hotels. Offset printing will not damage the surface of the object. I hope I can help you.