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Cargo containers of China Railway Express are seen at Duisburg Intermodal Terminal(DIT) in Duisburg, western Germany, on April 16, 2018. (Xinhua/LuoHuanhuan)

Cargo containers of China Railway Express are seen at Duisburg Intermodal Terminal(DIT) in Duisburg, western Germany, on April 16, 2018. (Xinhua/LuoHuanhuan)