advantage:
1. Good air tightness and waterproof performance, good firmness and mute effect. Arc-shaped chamfer, the visual effect is more beautiful.
2. The seamless welding of the inner sash has good air tightness and waterproof performance, as well as good firmness and mute effect.
The advantages of seamless doors and windows are mainly reflected in the appearance, better sealing and sound insulation, and better waterproofness. In addition, we have not found that seamless welded doors and windows have more advantages. What are its disadvantages?
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