1)Aluminum heatsink 2)black anodizing 3)Our capacity:melting,tooling,extrusion,CNC precision machining & finishing Aluminum Heatsink with balck anodizing and CNC high-precison machining,aluminium radiator, alumnium machining parts,aluminium profile with black anodizing,aluminium profile.Aluminium profile requirement ItemOriginal ProductAlternativesShapeIrregularRound,Square,Triangle,Rectangle etc ...