Thanh Hoa’s longest cross-mountain highway tunnel construction site
Thung Thi tunnel, 680 m long, located on the North-South highway through Ha Trung district (Thanh Hoa), has just been drilled to clear the right […]
Thung Thi tunnel, 680 m long, located on the North-South highway through Ha Trung district (Thanh Hoa), has just been drilled to clear the right […]
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