China's largest domestically manufactured tunnel cutter, the Jinghua, completes its work on the western section of the Beijing East Sixth Ring Road reconstruction project on June 28, 2023. Built by China Railway 14th Bureau Group Corp Ltd, the tunnel is the longest for a highway constructed by boring machines in China. The machines can cut through different soil and rock formations and are suitable for use in urban areas. [XING GUANGLI/XINHUA]
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