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Waterproof Thermal Break Aluminum Profile Window Frame on China WDMA bifold High window sillWaterproof Thermal Break Aluminum Profile Window Frame Product Display Product Display Thermal Break Aluminum Profile for Window and Doors 1 Material Aluminium alloy 6063,6061 etc. or according to customer's request 2 Temper T5,T6 3 Surface treatment Mill finish, anodized, powder coated, electrophoresis, sand blasting, wood grain painting, matted, polishing bright etc. 4 Color available Silver, Bronze, champagne, Matte, Natural for anodizing, RAL for