The surface of the aluminum alloy is polished and shiny by oxidation. The window sash frame is large and can be inlaid with a large area of glass, which makes the indoor light full and bright, enhances the contrast between the virtual and real facade between the indoor and outdoor, and makes the living room more rich. The aluminum alloy itself is easy to extrude, the cross-section size of the profile is accurate, and the processing accuracy is high, so many owners choose to use aluminum doors and Windows in the decoration.