🇨🇳 #PDChina | A 130-m-long tunnel boring machine (#TBM) with an excavation diameter of 14.3 m has rolled off the production line in Hangzhou, E China's Zhejiang, set to be used for constructing the west tunnel of the high-speed railway station at Hangzhou Xiaoshan International Airport. https://t.co/o5N8SlC8Cr
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