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A visitor experiences logistics system of Cargo Sous Terrain at the booth of SAP during the Hanover Fair 2018 in Hanover, Germany, on April 23, 2018. (Xinhua/Shan Yuqi)
A visitor experiences logistics system of Cargo Sous Terrain at the booth of SAP during the Hanover Fair 2018 in Hanover, Germany, on April 23, 2018. (Xinhua/Shan Yuqi)