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China Railway Tunnel Group
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China high‑speed rail expansion
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Latest: China's Linghang TBM sets world record tunneling under Yangtze River
In early July 2026, China completed construction of the world’s largest train station in Chongqing, underscoring its drive to expand domestic rail capacity. By the end of that month, the 15.4‑metre‑diameter Linghang shie