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       Rail Transit is characterized by large volume, fast speed, safety, punctuality, environmental protection, energy conservation and land use. It is widely recognized in the world that the fundamental way to solve the urban traffic problem lies in the priority to develop the urban public transportation system which is the backbone of rail transit.

Rail traffic communication system equipment including: wireless LieDiao system equipment, wireless train number checking system equipment, wireless access equipment, GSM - R terminal equipment, integrated video surveillance system equipment, railway electricity equipment management information system, and the railway emergency rescue command system equipment, train service information system equipment, equipment of passenger information service system, conference calls and meeting TV system equipment, digital telephony concentration machine, train radio machine, optical fiber cable line automatic monitoring equipment, photoelectric digital introduction of ark, ticket sales inspection system (AFC), etc.