1. Excellent heat and water insulation 2. Sound insulation 3. Good air tightness 4. Environmentally-friendly 1. Material: PVC Profile (Model: 60, 70, 80, Chameber: 3, 4, 5, 6; ) , CONCH(Chinese famous brand) 2. Design: As order. 3. Size: Custom 4. Glass: Single glass, Double glass, Clear glass, Tempered glass, Refective glass, LOW-E glass, Patterned glass, etc. 5. Surface Finish: Anodizing, ...