... 127*64mm surface treatment:anodizing Extrusion led bulb heat sinkexter diameter: 127*64mmsurface treatment:anodizingGarden Factory ... 9001:2008 Certification:AL information:1 Processing of heat sinks precison cutting,drilling, skiving,deburring,fine ... bonding,punching,stamping,milling,CNC maching,polishing2 Surface treatments for heat sinkclear anodizing, oxidation process, powder coating, brushing ...