An important point in maintaining a copper door is to maintain the integrity of the outer paint and prevent bumps and impacts. The high-end products in the general copper door are expensive, and they need to be extra careful when used. In ordinary copper door maintenance, it can be cleaned with a dry towel. However, it is not possible to use a detergent containing chemical components that damage the protective layer of the paint to clean it. It is also slow to open and close the copper door, so that the collision of the copper door with other things can be largely avoided and the protective layer of the copper door is caused. destroyed.