aluminum alloy 1)Material:aluminum alloy 2)Standard:GB 5237-2008 3)high-quality aluminum alloy1)Alloy No.:6005,6060,6061,6063,6063A,6463,6463A 2)Temper:T3-T8 3)Surface Treatment:1,Powder Coating2,Anodize3,Electrophoresis4,Mill Finish5,Wood Grain 6,Flourocarbon Coating7,PVDF Coating8,Polish4)Coating Colour:silver, bronze, champagne, black, blue, glod and so on. Special aluminum