Although the wire and cable industry is only a supporting industry, it occupies a large proportion of the output value. It has a wide range of products, including automotive electronic wire, high-temperature wire, etc. The applications are very wide, involving electric power, construction, communications, manufacturing and other industries, and all sectors of the national economy are closely related. Wire and cable is called the national economy "artery" and "nerve", is the transmission of electrical energy, transmission of information and the manufacture of a variety of motors, instruments, meters, electromagnetic energy conversion indispensable basic equipment, is the future electrification, information society necessary for Basic products.

    Wire and cable industry is the second largest industry after the automotive industry, product variety to meet the rate and market share are more than 90%. In the world, China's wire and cable output value has exceeded that of the United States, becoming the world's largest producer of wire and cable. Along with the rapid development of China's wire and cable industry, the number of new enterprises has been rising, and the overall technical level of the industry has been improved.

  The main industry segmentation of the cable industry for wind power cables, power cables, in detail.

  Cables for wind power generation. The main performance requirements for wind power generation with electronic cables are mostly used in areas with harsh climatic conditions, cold temperatures, large temperature differences between day and night, so it should have good low-temperature resistance, can withstand -40. C low temperature, and excellent UV resistance, weather aging performance. Wind power cables are divided into mobile and fixed installation cables according to the use occasions. Mobile cable, need to frequently twist, so should have good torsion resistance and bending performance sometimes contact with oil, in a special environment will suffer from seawater corrosion, should have oil, corrosion-resistant performance.

  Have good flame retardant properties, the choice of materials conductor can be used GB/T 3956 provisions of Class 5 or Class 6 soft copper wire, the surface should be clean, no oil, no damage to the insulation burr, 6mm2 and above specifications using bundle twist plus double twist structure insulation using ethylene propylene rubber or silicone rubber, with excellent resistance to ozone and heat aging performance sheathing using chlorinated polyethylene, chloroprene rubber or chlorosulfonated polyethylene The sheath is made of chlorinated polyethylene, neoprene or chlorosulfonated polyethylene, which has oil resistance and cold resistance.

    Low-voltage power cables lkV and below are used in electric power, metallurgy, machinery, construction and other industries; about 50% are used in the power distribution network of the power system, the power from high-voltage substations to cities and remote areas; the rest are used in the construction industry, machinery, metallurgy, chemical and petrochemical enterprises, etc.; medium-voltage power cables 3-35kV are mostly used in urban high-voltage distribution networks; some are used for internal power supply of large enterprises, such as large steel and petrochemical enterprises. Such as large iron and steel, petrochemical enterprises, etc.; high-voltage line power cable 66-330kV is mainly used in the lead-in lines of large turtle stations.