In order to adapt to rapid economic development the demand for energy, alleviate tight supplies of coal, electricity, petroleum and transportation, the Ministry of Railways Daqin line traffic to reach the target of 200 million tons and invest 4.5 billion yuan of its implementation of one hundred million t expansion reconstruction,expansion signal reconstruction project for the Datong-Qinhuangdao line inlay on the bright eyes.
   
Signal reconstruction project, CITIC Building equipment including centralized control of part of the cabinet sub-line cabinets and power supply panel; and decentralized control of part of the range of automatic block system.

Spring-loaded terminal block in the railway industry has a rich experience and mature technology, mature products and a model of successful applications in the railway industry in Europe and America.