1.ISO9001:2008 CE RoHS for aluminium profile box 2.Provide OEM service 3.Competitive ... punching, stamping,milling, CNC machining,polishing 2 surface treaments for heat sink clear anodizing, oxidation process, powder coating, ... Structure: 9-curved model steel, welded by the high quality professional 3-ways-connected structure.7.IP55,IP56, ... question, please feel free to contact us. aluminium profile box