... .Material:Aluminum 6063 or 6061 2.Surface treatment:Anodizing high quality aluminium square tube 1.Material: AL alloy 6000 series, 3000series, 5000series ... etc.7.Use: industry, decoration, furniture, part of luggage etc8.Color: Silver,Golden,Black,Red,Blue and so on Advantage:1 ... factory to ensure to the good quality and lead time.3).All OEM is welcome. all kinds of high quality aluminium square tube