... extrusion,CNC precision machining & finishing Aluminum Heatsink with balck anodizing and CNC high-precison machining,aluminium radiator, alumnium ... ProductAlternativesStandard for ExtrusionGB /T5237-2000 (Our national standard)EN-755-2/3/6/8, BS-1474, BS ... After Sale ServiceQuality orientedISO 9001:2008 TS16949:2002DocumentsMill Certificate,RoHS,REACH(SVHC),Working Instruction,Inspection Instruction, ...