... 7.Use: industry, decoration, furniture, part of luggage etc8.Color: Silver,Golden,Black,Red,Blue and so on Advantage:1).Precision machining ... mm,hole tolerance can be 0.05mm.2).All processes covering extruding,milling,machining and surface treatment are in the same factory ... to ensure to the good quality and lead time.3).All OEM is welcome. all kinds of high quality aluminium square tube