... sink Silver anodization heat sink 1,Material:mainly in 6000 grade,Such as 6063,6061.other alloy uponcustomer’s requirement,like ... lathe,CNC machining…3,Surface treatments: mill finished,anodizing,electroplating,powder coating,electrophoresis.4,Meet the China national standard GB/T6892 ... ) and american standard AAMA611-98.5,OEM. anodized or powder coated aluminium heat sink part and aluminium radiator