... . 2.Color:Clear anodized,or customized. 3.CNC turning,milling. LED tunnel lamp extruded aluminum heat sink It's hold good heat dissipation and smart ... , wire-drawing, etc.3.Surface Treatment: Mill finished, Polished, Sand blasting, Anodized, Powder coated, Chromating, Passivating, Electrophoretic coated and etc.4.Purpose: Heat ...