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The world's first large diameter double shield earth pressure combined tunneling machine, "Tiebing Guanghua 6," is being launched by China Railway Construction Heavy Industry Corporation and will participate in the construction of the Guangzhou East to Hu

Author:PV:162 Time:2023-09-01

The world's first large diameter double shield earth pressure combined tunneling machine, "Tiebing Guanghua 6," is being launched by China Railway Construction Heavy Industry Corporation and will participate in the construction of the Guangzhou East to Huadu Tiangui intercity railway project