... extrusion for computer cooling2)aluminum heat sink extrusion for pc case cooling4)copper extrusion heatsink for CPU cooling5) ... 8)100~200mm width aluminum extrusion heat sinks for pc enclosure cooling9)200~300 aluminium extrusion heatsinks for computer ... /bonding,punching, stamping,milling, CNC machining, polishing 12)Surface treatments for copper aluminum heat sinks extrusion: clear anodizing,powder ...