... air tightness 4. Environmentally-friendly Specification: 1. Material: -Aluminium Alloy - UPVC Materials (Model: 60, 70, 80, Chameber ... , LOW-E glass, Patterned glass, etc. 5. Aluminium Surface Finish: Anodizing, Powder Coating, Grinding, Blasting, PolishingUPVC ... 9. Screen: Metal, Nylon, Fiberglass 10. Package: Plastic sheet + Carton + Wooden box / Pallets / Iron Shelf Aluminium Folding Window, UPVC ...