1. Aluminum alloy profile integrated shell, color: aluminum oxide acid pickling and grinding treatment (the project quantity can be customized color, the simple way for family is to buy self-adhesive wallpaper paste)
2. The chain is made of high quality alloy steel;
3. Features of low noise, low energy consumption and maintenance free;
4. Small size, modern design, harmonious and beautiful with windows;
5. Strong locking force of pushing and pulling force, suitable for most open windows;