Haivan Pass Tunnel CONSTRUCTION PROJECT

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As of September 2003 - Home | Next

Waterproofing Installation at the Clean Air Supply Tunnel in Ventilation Adit

Lắp đặt màng chống thấm tại Hầm cấp khí sạch trong Hầm thông gió

Tháng 09/2003 - Trở về

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