In recent years, with the development of China's national economy and infrastructure, there are more and more middle -, high-rise and super - high-rise buildings. Due to the modern architecture in due to the increase of the complexity of the distribution and capacity, to the requirement of power distribution reliability and economy of main is more and more high, the company in order to meet the market demand, refer to the relevant data at home and abroad, under the guidance of experts, research and development of the branch cable (prefabricated branch cable), products by the national electric wire electric cable authorities, the national electric wire electric cable quality supervision and inspection center and the national fireproof construction material quality supervision inspection center testing, the technical performance of Q/ZRX003 enterprise standard requirements, main performance across JCS376 Japanese standards with branch cable, This product has passed the provincial technical appraisal, and obtained a number of national patents (patent number: ZL98219844.2, ZL002584719, ZL012760358, ZL012760994, ZL012766127), mainly suitable for medium and high-rise buildings and mining, enterprises and institutions in the transmission of rated voltage in 1000V and below power supply and distribution equipment. It has the advantages of safe and reliable power supply, good insulation performance, convenient construction and installation, low distribution cost, wide application range, various specifications and low installation environment requirements. In foreign advanced countries, a large number of cables with branches have been adopted to replace the busbar slot for power transmission. Compared with busbar slot, it has more anti-seismic, anti-inflammation and fire-resistant effects, and avoids the tedious phenomena of busbar slot installation and maintenance.