When the door and window installation team of the assembly plant completes the installation of the doors and windows, due to the carelessness of the installer, it often happens that the filled foaming agent is unevenly coated on the steel doors and windows, and the stubborn marks are difficult to see on the top.
In this case, we can use the following method to clean the steel doors and windows:
1. Use a blade to level the area of the fill and then sand it with a sandpaper.
2. If there is lacquer decoration, paint the same color to treat the shovel.
3. Scrub the surface of the door and window frame with water to remove the general dust.
4. Scrub stubborn stains with a small amount of ethyl acetate on a white cotton gauze, then scrub with water.
