An apparatus for a discharge treatment, comprising a pair of electrodes located opposite to each other; a means for applying an alternating current-high voltage between the electrodes; and a means for passing a gas mainly composed of air at a rate of 10 msec or more through a space formed between the electrodes is disclosed. The case includes a case body, which has a component chamber and a key socket, and a mechanical key, which is partially received in the key socket. The increased turbulent flow reduces the separation of fluid at the boundary layer to minimize the quantity of fluid ejected from the surface. The stator fixes the first magnet and second magnet to the same axis to rotatably support the rotor. A plurality of reflective devices are attached to the fibers whereby when the colorization pellet is combined with a plastic molding compound during an injection molding process to form a part, the formed part has a metallic appearance. The SiGe cladding layer includes a plurality of arrays of quantum dots separated by at least one SiGe spacing layer, the quantum dots being formed from a compound semiconductor material.