... 3 anodized & powder coated color aluminium tubeSpecificationsRound(Square) Aluminum Tube: 1)ISO9001:2008 2)CNC machining 3)Good quality ... Square, Round, Flat, Oval, and according to customer's drawing. 7,Color: Silver, Golden, Black, Red, Blue, etc. 8,Packing ... carton box different packing can be required by customersSpecificationsround aluminum tube,used for sound box with high precision and large ...