1. After the doors and windows are installed, the protective film on the surface of the profile should be torn off in time and scrubbed clean; otherwise, a large amount of protective film adhesive will remain on the profile, which is difficult to clean.

2. On windy days, the casement window sash should be closed in time.

3. Heavy objects cannot be hung on the handle of the casement window sash.

4. The casement top-hung window can be opened differently by changing the direction of the switch handle. It is necessary to understand how to operate it to avoid damage.

5. When the sliding window is in use, the sliding track should be cleaned frequently to keep it clean, so that there are no hard particles on the surface of the track and in the groove.

6. Plastic steel doors and windows are equipped with drainage systems in the window frame, window sash and other parts to ensure the air tightness and water tightness of the doors and windows. Users should not block the drainage holes of the doors and windows during use, so as not to cause the drainage performance of the doors and windows to decline.

7. When pushing and pulling the sliding window, the force point should be in the middle or lower position of the window sash. Do not use too much force when pushing and pulling, so as not to reduce the service life of the window sash.

8. The gauze fan can remove the glue strips that fix the gauze by itself, take off the gauze, and wash it with water-soluble detergent respectively.

9. When the screen fan of the sliding window is in use, please pay attention to coincide with the vertical frame of the inner rail sliding fan, so as to maintain a good sealing performance.