1.ISO9001:2008 CE RoHS for aluminium profile box 2.Provide OEM service 3.Competitive price Specification ... make all metalworks according to your requirement 1 Processing of heat sinks: precision cutting, drilling, skiving,deburring,fine blanking ... , stamping,milling, CNC machining,polishing 2 surface treaments for heat sink clear anodizing, oxidation process, powder coating, brushing, sandblasting ...