Heat sink is a device for electrical appliances in the heat dissipation of electronic elements, much is made of aluminum alloy, brass or bronze plate,sheet, multi sheet, such as CPU central processor computer to be used inheat sink is considerable, administrative power tube, TV sets, power amplifierpower amplifier in pipe to use a heat sink. The general heat sink in use toelectronic components in contact with the radiating fin surface coated with a layer of thermal grease, make more effective components emitted heatconduction to the heat sink, the heat emitted into the surrounding air.