BXN series: Denso series of products, this product is divided into sintered and press-fit class, sintered products and its heat sink is mainly copper materials, small power is also aluminum and iron, the appearance of its various models is almost the same result is the size of the outer diameter is not the same, press-fit class of the heat sink are aluminum materials, the appearance of the same, but the motor welded stator line of the way, the appearance of the shape is different; copper pole plate products, better than the other material heat dissipation performance, the pole plate Nickel-plated appearance does not require special protection, the use of iron rivets riveted; Toyota series appearance like a chicken leg so that people see it is easy to remember, the pole plate material is divided into two materials: copper and aluminum; no excitation tube design, the product looks like a chicken leg, fewer parts, reliable performance.