The use of railway signal cables and mining communication cables for differentiating and cost prices/direct selling quotes

The communication cable (English name: communicationcable) refers to a cable used for near-distance audio communication and long-distance high-frequency carrier and digital communication and signal transmission, and is one of China's five largest cable products. According to the purpose and scope of use of communication cables, they can be divided into six series of products, namely, domestic communication cables (including paper-insulated local cables, polyolefin-insulated polyolefin sheathed local telephone cables), long-distance symmetrical cables (including paper Insulated high- and low-frequency long-distance symmetric cable, copper-core foam polyethylene high- and low-frequency long-distance symmetric cable and digital transmission long-distance symmetry cable), Coaxial Cable (including small coaxial cable, medium coaxial and small coaxial cable), submarine cable (separable Symmetrical submarine and coaxial submarine cables), fiber optic cables (including conventional cable, ribbon array, and skeleton types), and RF cables (including symmetric and coaxial RF).

Communication cable production plants are distributed throughout the country. In addition to the production of long-distance communication cables and local telephone cables in China, fiber optic cables and polyolefin sheaths have also made considerable progress in all-plastic city telephone cables. Many domestic manufacturers and research institutes have introduced technology and equipment from abroad to start production. . In China, a small amount of polyolefin insulated polyolefin sheathed plastic local telephone cables are sold to Hong Kong, Macao, Southeast Asia and the Middle East.

The cable core is composed of a plurality of conductors or conductors insulated from each other, and the outside has a sealed jacket communication line. Some have outer sheaths outside the sheath. There are a variety of laying methods such as overhead, direct burial, pipelines and underwater. Divided into symmetrical, coaxial and integrated cables by structure; divided into field and permanent cables (underground, submarine cables) by function. The communication cable has a wide transmission band, large communication capacity, and small external interference, but it is not easy to overhaul. Can transmit telephones, telegrams, data and images.