... ,deburring,fine blanking,soldering,bonding, punching, stamping,milling, CNC machining,polishing 2 surface treaments for heat sink clear anodizing, ... process, powder coating, brushing, sandblasting,shot blasting,polishing,milling 3 Surface color: natrual ,black,matt black, green, red, ... model steel, welded by the high quality professional 3-ways-connected structure.7.IP55,IP56,IP65,IP66 According ...