One、Physical Methods
1、 Regardless of whether the concrete has set, you can use tools similar to a trowel to remove the concrete. However, be careful not to apply excessive force, as this could cause scratches on the stainless steel doors and windows.
2. If the cement has not yet hardened and is stuck to the stainless steel doors and windows, you can directly clean it with a broom. Alternatively, you can pour water onto the stainless steel doors and windows and then use a cloth or other tools to remove the cement.

3. If the cement has hardened, it is more difficult to remove. We recommend using a steel file or cement sandpaper to remove the remaining cement. Please also note that you should not directly abrade the stainless steel door or window, as this will leave scratches.
II. Chemical Methods
1、The main component of cement is calcium silicate. It is recommended to use acidic substances such as citric acid to remove it. Since these two substances can react chemically, they can quickly remove the cement. After a period of time, simply rinse with water.
2. Alternatively, you can purchase specialized concrete cleaning agents available in supermarkets or furniture markets, which can quickly and easily remove concrete from stainless steel doors and windows.
III. Precautions when using cement mortar for construction.
1. When preparing the wall surface, it is essential to thoroughly clean any peeling and cracks, and to remove any remaining dust and debris with cement mortar. Additionally, the wall surface should be properly wetted with water or coated with adhesive for sealing before proceeding.
2. During the construction process of fixing stainless steel doors and windows with cement, it is essential to wear gloves, masks, safety glasses, and helmets to prevent accidents and ensure the safety of construction personnel.