China Railway 18th Bureau Group has successfully completed the construction of the first micro TBM tunnel in China! Assisted by Tianyou cutting tools throughout the excavation process
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+86-0635-8368869Author:PV:411 Time:2023-09-01
China Railway 18th Bureau Group has successfully completed the construction of the first micro TBM tunnel in China! Assisted by Tianyou cutting tools throughout the excavation process