... 3)Our capacity:melting,tooling,extrusion,CNC precision machining & finishing Aluminum Heatsink with balck anodizing and CNC high-precison machining,aluminium ... with black anodizing,aluminium profile.Aluminium profile requirement ItemOriginal ProductAlternativesShapeIrregularRound,Square,Triangle,Rectangle etc...and Customized are welcome.Alloy6063 alloy6063,6061 ...