1Protection function: High-precision copper, low heat, safer for a long time using. 2German imported raw materials: Silky smooth surface, fireproof and temperature resistant, pure color. 3With tail port: Efficient saving of wire installation time, wire can not be connected to the port due to wiring problems such as field of view, ensuring wire safety. 4Track type buckle: No need to press hard, just press the guide rail to make the installation easier. 5Bus-bar installation: Wiring method from Europe and America, with U-shaped bus-bar.