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Construction of Jiaozhou Bay undersea tunnel underway(1/3)_城市资讯网

na's Shandong Province is underway on March 8, 2026. The tunnel is the world's largest undersea tunnel in terms of construction scale, the longest of its kind, and among the most technically challengi

of Jiaozhou Bay in Qingdao City, east China's Shandong Province is underway on March 8, 2026. The tunnel is the world's largest undersea tunnel in terms of construction scale, the longest of its kind

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