1.Unique insert design, frame comprise edge of interior leaf. Rain and water cannot stir in indoor. Channel of external frame insert into weather-stripping of internal window. Superior sound insulating, heatproof, waterproof, and gas tightness performance.   

2. External or internal can be insert screen window. Wide tapered-angle slide wheel device. Slide smoothly and heavy duty performance,EPDM seal system. Less components and convenient installation.

3. Applied  for villa, residential district and high building.

4. Multiple choice for surface treatment: silvery white anodizing, electrophoretic coating, powder coating, PVDF coating, wooden texture coating.Can be processed in multiple or different color based on our clients.