- Exterior-opening window structure, interior-opening window performance
- Frame stacking edge frame enhances waterproofing
- Glass groove depth 22mm (more stable with large glass)
- Multi-chamber reinforcing piece (improves stability of large glass)
- Full closed edge band (improves stability of large glass)
- Full sealing cavity (enhances sealing performance)
- Vertical isothermal insulation strip
- Thickened treatment at screw connection points
- Interlocking insulation strip structure
- Multiple rubber strips for multi-layer sealing to enhance overall performance
- Inclined pressure line / square pressure line combination of inclined and straight arrangement















