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On June 19th, the Chengdu City Construction Company of CCCC II was under construction, and the CCJ Engineering and Equipment Branch of CCCC was responsible for the shield construction. The TJ05A standard construction of Chengdu Metro Line 17 received good
On June 17th, the four auxiliary tunnels of the Xinping Tunnel in the domestic section of the Zhonglao Railway, which is under construction, were simultaneously connected, which created favorable conditions for improving the construction environment of th