Extruded Heat Sink. 1.Material:AL6063-T5,AL6061-T6 is ok. 2.Color:anodized, ... heat sink.It's hold good heat dissipation and smart surface treatment. 1.We can produce the aluminum profile with different specification ... , punching,Drilling, Trimming, Cutting, CNC machining, wire-drawing, etc.3.Surface Treatment: Mill finished, Polished, Sand blasting, Anodized, Powder coated, Chromating ...