Abstract: A method of electroplating a radiator is provided. A container is disposed on a predetermined plating area of the radiator and an electrolyte containing the plating material is added into the container such that the electrolyte directly contacts the predetermined plating area to form a plating layer thereon.

Abstract: A radiator for a heat sink device is formed by an extruded aluminum. The radiator comprises a base and a heat conductive metallic element. The base has a plurality of fins on a side and at least an indentation on another side. The heat conductive metallic element corresponds to the indentation. The inner sidewall of the indentation and the heat conductive metallic element correspond to at least one surface of the inner sidewall of the indentation. The inner sidewall of the indentation and the heat conductive metallic element comprise chambers for receiving jointing material for jointing the heat conductive metallic element to the indentation.