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 outstanding advantages of broken bridge aluminum alloy insulated doors and windows are light weight, high strength, good water and air tightness, good fire resistance, large lighting surface, resistance to atmospheric corrosion, long service life, good decorative effect, and good environmental performance.

Aluminum alloy doors and windows also include doors and windows that are made of aluminum alloy as a load-bearing member (a member that bears and transmits its own weight and load) as a base material, as well as wood and plastic composite doors and windows, abbreviated as aluminum wood composite doors and windows or aluminum plastic composite doors and windows. These composite doors and windows combine the advantages of different materials, further enhancing the performance and aesthetics of the doors and windows. Aluminum alloy windows have become an indispensable part of modern architecture due to their excellent performance and wide range of applications.

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.