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Vehicles wait for the loading of containers at the second phase of the automatic dock of the Qingdao port in Qingdao, east China's Shandong Province, Nov. 28, 2019. The second phase of the automatic dock of the Qingdao port was put into operation on Thursday, which applies several technological inventions developed by the Qingdao port. (Xinhua/Li Ziheng)
