... .Multiple functions,such as,heat insulated,anti-aging,water proof 2012 Hot Sale UPVC &Aluminum Venetian Blinds.(Factory)1.Material:UPVC &PVC ... .6w/m2.k13.Wind resistance:3700pa14.Air permeability:1.3m3/h.m15.Watertightness:350pa16.Packing: Foam inside and wood crateds,Standard ... , Baisha CunDong street , HuangQi Town , Nanhai District ,Foshan City, China 2012 Hot Sale Aluminum Venetian Blinds(factory)