China exports largest tunneling machine to Bangladesh

Photo taken on Sept. 10, 2018 shows the assembling site of a shield tunneling machine in Chattogram, Bangladesh. China's largest shield tunneling machine for export, which is 12.12 meters in diameter and weighs 2,200 tonnes, will be used for opening a 3,500-meter road tunnel under Karnaphuli River. (Xinhua/Liu Chuntao)