aluminum alloy section bar heat sink for electron for frequency conversion power supply for ... ,grind,polish,abrade,pestle,heat tinting,silk-screen.Type: section bar ribbed radiator ;finned radiator ;ri edradiator ,play Chip radiator, Chassis ... ,die casting,forging,machining parts with different materials,such as brass,aluminum alloy,steel,stainless steel,zinc alloy.3.our strong ...