Although China can produce special overhead lines with special requirements, there is still a big gap compared with foreign advanced levels in technical performance such as high heat resistance, high corrosion resistance, creep resistance, softness and high conductivity. Such as split overhead line, there are gaps in corrosion resistance, vibration resistance, snow and ice resistance, low corona loss, low arc loss, low arc amount, double capacity and other technical performance indicators. In order to meet the needs of major projects such as the Three Gorges project, special overhead lines need to be developed and improved in terms of product variety and product performance. Nuclear power plant cables are distributed in the nuclear island, conventional island and BOP parts of the nuclear station for power transmission, control, computers, instruments, etc. The types of cables required for a nuclear station are basically the same as those for a thermal power station. However, due to the strict technical performance requirements of nuclear power plant cables such as halogen-free, low smoke and low toxicity, China can only produce wire and cable for the periphery of the nuclear island, and most of the rest can only rely on imports. According to the national "energy development" 12th Five-Year Plan ", "emerging energy industry development plan" set, if in 2020 to complete the non-petrochemical energy proportion of 15% of the target, China's nuclear power scale of at least 75 million kilowatts, while the current domestic nuclear power installed capacity is only 9 million kilowatts, the future has up to 7 to 8 times the growth of space. Therefore, the cable for nuclear power plant has good market development prospects. Third, low-smoke, low-halogen, low-smoke halogen-free flame retardant wire and cable The product is mainly used in subway, tunnels, oil platforms, ships, power stations and other important places, the above related industries in the "Twelfth Five-Year" period in a state of rapid development, such as domestic subway construction and improvement, the comprehensive construction of the railway network (including high-speed rail network), This will further stimulate the large demand for related high-performance environmentally friendly low-smoke, low-halogen and low-smoke halogen free cable products. During the "Twelfth Five-Year Plan" period, China's automotive industry will maintain sustained and rapid development. In 2015, the annual production of automobiles reached 25 million units, compared with about 16 million units during the "11th Five-Year Plan" period, an estimated increase of 56%, so the demand for automotive wiring will also increase significantly. The future development trend of this product is high temperature resistance, high damping, thin wall type and shielded type automotive wiring. At present, the domestic mass production of flame retardant cables are mostly C grade, B grade, high flame retardant category of class A is still in development, which with the current requirements of many high-quality engineering projects in our country there is A big gap, the "Twelfth Five-Year" period of development direction is to achieve A class flame retardant supporting a complete variety of cables to meet a variety of requirements of high flame retardant performance applications. 6, intelligent building with broadband, local network cable (6A, 7 and 8 types of digital network communication wire and cable) the product also has the transmission of telephone, fax, video phone, anti-theft alarm and other signal functions, also known as data cable. The product has accounted for more than 20% of all insulated cables in the United States. In China, with the rapid development of intelligent buildings, computer industrialization and information highway projects, the demand for this cable will also be increasing. At present, the transmission rate of the cable has reached 250MHz(that is, category 6 cables), and the transmission frequency of 800MHz is expected to be reached during the "Twelfth Five-Year Plan" period, which can meet the needs of the "three networks in one" 1) for transmission media.
