+ISO9001:2008 CE RoHS for heat sink +Provide OEM service +Flexible MOQ:20pcs +mearly 10 years making ... , punching, stamping,milling, CNC machining,polishing 2 surface treaments for heat sink clear anodizing, oxidation process, powder coating, brushing, sandblasting,shot blasting ... welded by the high quality professional 3-ways-connected structure.7.IP55,IP56,IP65,IP66 According to your request. We are ...