What is Communication Cable? What are the domestic and international manufacturers of communication cables?

A. What is a communication cable? Communication cable is a cable used to transmit signals, data and electricity between electronic devices. It is an indispensable part of modern information and communication technology, and is widely used in telecommunications, computer networks, radio and television broadcasting and monitoring and other fields. The main components of communication cable include conductor, insulation layer, insulation jacket, shielding layer and sheath. The conductor is the transmission channel of the current, the insulation layer is used to isolate the current between the conductor, the insulation jacket is used to protect the insulation layer, the shielding layer is used to suppress electromagnetic interference, and the jacket is used to protect the entire cable. Communication cables can be divided into various types according to their purpose. Here is a list of some common communication cables: Coaxial cable: Coaxial cable is a common cable for transmitting analog TV signals and Internet signals. It consists of an inner conductor, insulation, an outer conductor and a jacket. Coaxial cable has a layer of insulation between the inner and outer conductors, which can effectively reduce signal interference. NETWORK CABLE: A network cable is a communication cable used to connect computers and network devices. Common types of network cables include Cat5, Cat6, Cat7 and so on. The internal structure of a network cable usually consists of eight copper wires that are wrapped in insulating material and inserted into a socket. Optical Fiber: Optical fiber is a type of communication cable used to transmit optical signals. It consists of one or more very thin fiber optic core wires that are wrapped in a transparent jacket. Optical fiber transmits signals at a fast speed, over a long distance, and with strong anti-interference capability, so it is widely used in the field of high-speed data transmission. The selection of communication cables should take into account the type of signal to be transmitted, transmission distance, signal transmission speed, anti-interference ability and other factors. In actual use, it is also necessary to consider the reliability of the communication cable and the economy and other factors, select the most suitable communication cable, in order to ensure the quality and stability of communication. In addition to the above main communication cables, there are other types of communication cables, such as power lines, serial lines, parallel lines and so on. Each of these cables has its own characteristics, and the appropriate cable can be selected according to the specific application scenario. Communication cables play a vital role in modern information and communication technology. Whether in the home network, office network or the Internet and other fields, communication cable is an important medium for information transmission, for the rapid transmission of information and accurate delivery of the basis. With the continuous progress of science and technology and the expansion of applications, the types and application areas of communication cables will continue to increase and expand.

Second, what are the domestic and foreign manufacturers of communication cables?

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