Quality requirements for aluminum alloy doors and windows

1. The surface of doors and windows should not have obvious defects such as scratches, abrasions, or bumps.
2. There should be no significant color difference on the colored surface of adjacent door and window components.
3. should be no aluminum shavings, burrs, oil stains or other stains on the surface of doors and windows, and there should be no adhesive overflow at the assembly joints.