Cable is a cable that transmits telephone, telegraph, facsimile documents, television and radio programs, data and other electrical signals. The wire stranded by a pair of mutually insulated and. Communication cables and overhead wire, compared with large communication capacity, high transmission stability, good secrecy, less affected by natural conditions and external disturbance influence etc. advantages.

Communication cables (English Name: communication cable) is used for short-range audio communication and distance of the high-frequency carrier and digital communication and signal transmission cable, and is one of China's five major cable products. According to the use of communication cables and the use scope, can be divided into six series, namely local communication cables (including paper insulated cable, the words of polyolefin insulation polyolefin sheathed cable, the words) long distance symmetric cable (including paper insulated high frequency long-distance symmetrical cable, copper core polyethylene foam with high and low frequency long-distance symmetrical cable and digital transmission distance symmetrical cable), coaxial cable (including small coaxial cable, coaxial and micro coaxial cable, submarine cable () can be divided into symmetrical and coaxial submarine cable, submarine optical fiber cable (cable), including the traditional strip array and skeleton type three), RF cable (including symmetric RF and RF coaxial).

Communication cable production plant distribution throughout the country. China in addition to the production of long distance communication cable and the city cable, fiber optic cable and polyolefin insulation composite shielding all plastic cable in the city has also been considerable development, many domestic manufacturers and research institutes from abroad introduced technology and equipment began production. There is a small amount of polyolefin insulated plastic telephone cable sold in Hong Kong and Macao, Southeast Asia and the Middle East and other places Chinese every year.