... profile extruding,Precise cutting,Straight rectification,Bending,Drilling,Tapping,Stamping,Pulling,CNC mill, CNC lathe,CNC machining…3,Surface treatments: ... the China national standard GB/T6892-2006 and Erope standard EN12020-1,2(2001) and american standard AAMA611-98.5,OEM. ... anodized or powder coated aluminium heat sink part and aluminium radiator