heat sink extrusion high precision fine surface treatment heat sink aluminium radiator extrusion heat sink1,material:6063 6061 6060 and other different aluminium alloy.2,status:T5 T6 or other special status3,processing:extruding,cutting,punching,drilling,tapping,bending,tube shrinking,CNC turning,CNC milling,welding,assemble…4,surface treatment:mill finish, polishing,sand blasted,anodizing,powder ...