+ISO9001:2008 CE RoHS for CNC processing parts +Flexible MOQ:20pcs +mearly 10 years making experience ... soldering,bonding, punching, stamping,milling, CNC machining,polishing 2 surface treaments for heat sink clear anodizing, oxidation process, powder coating, brushing, sandblasting ... .6.Structure: 9-curved model steel, welded by the high quality professional 3-ways-connected structure.7.IP55,IP56,IP65 ...