The decorative surface of doors and windows should not have obvious damage, which means that the protective film on the surface of doors and windows should not have any scratches or scratches. There should be no obvious color difference on the coloring surface of adjacent components on doors and windows. There should be no aluminum shavings, burrs, oil stains or other stains on the surface of doors and windows, and there should be no overflowing adhesive at the assembly joints.

The window sash frame of aluminum alloy windows is large and can be embedded with a large area of glass, making the indoor light sufficient and bright, enhancing the contrast between indoor and outdoor facades, and making the living room more layered. Moreover, aluminum alloy materials have a light weight and high strength, which allows aluminum alloy doors and windows to have high cross-sectional strength even when the cross-sectional size is large and the weight is light. In addition, aluminum alloy itself is easy to extrude, with precise cross-sectional dimensions and high processing accuracy of profiles. Therefore, many homeowners choose to use aluminum alloy doors and windows in decoration.

Aluminum alloy windows have excellent strength and durability, and are not easily deformed or damaged. They can withstand the pressure and impact of daily use, and maintain their original appearance and structural stability for a long time.

Aluminum alloy windows have excellent corrosion resistance and can be used for a long time in various harsh environments without damage. Aluminum alloy windows can maintain good quality in humid coastal areas, acid rain environments, and hot and dusty areas.