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As we all know, bus duct was originally developed by the United States and officially put into practical application in Japan in the 1950s. At present, bus duct is widely used in modern buildings all over the world. Modern high-rise buildings and large workshops need huge electric energy;In the face of the strong current of hundreds of amperes required by this huge load, it is necessary to choose safe and reliable conduction equipment, and the bus system is a good choice. Bus duct system is a high-efficiency power distribution device, which especially meets the needs of economic and reasonable wiring in higher and higher buildings and large-scale factories