Cable is used to transmit electric (magnetic) energy, transfer information, realize electromagnetic energy conversion, form automatic control lines and manufacture various electrical equipment, and is an indispensable basic product to realize electromagnetic energy conversion. The main structure of the cable is "conductor+insulation+sheath", the conductor is generally made of copper, aluminum or its alloy, and the insulation and sheath are generally made of rubber, polyethylene, PVC and other materials.
The cable industry is a basic industrial industry. Its products are widely used in various fields of production and life, such as energy, transportation, communication, automobile, petrochemical, etc., providing important supporting support for various industries, national defense construction and major construction projects. It is the "artery" and "God" of the national economy, and the basic guarantee for the normal operation of modern economy and society. The cable industry is the second largest industry in China after the automobile industry, and plays an extremely important role in the national economy.
From the perspective of cable technology development in the world, at present and for a long time to come, the standards for evaluating the technical level of cable products are mainly large capacity, ultra-high (ultra-high) voltage, high temperature resistance, short circuit resistance, no harmful gas generation, maintenance free, environmental protection and energy conservation. The United States, Japan and EU countries have banned the production, import or use of low-end cable products that do not meet the relevant safety, non-toxic, environmental recovery requirements.
In recent years, with the rapid development of China's economy, the scale of power, communication, energy, transportation and other industries has been expanding, and the demand for cables has been growing rapidly. China's cable industry has also grown and entered a leap forward development period. According to the Guidelines for the Development of China's Cable Industry during the "13th Five Year Plan" (2016-2020) issued in September 2016, during the "12th Five Year Plan" period, the economy of China's cable industry has maintained a stable growth trend in general, and the export scale has increased. The output of metal conductors and the consumption of optical fibers of major cable products continue to rank first in the world. The overall development foundation of the industry has been strengthened, and the comprehensive strength has been further improved.
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