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A technician from China's CRRC Sifang Locomotive and Rolling Stock Co., Ltd. checks trains at the workshops of the Roca Line, in Llavallol, Argentina, April 11, 2017. (Xinhua/Martin Zabala)
A technician from China's CRRC Sifang Locomotive and Rolling Stock Co., Ltd. checks trains at the workshops of the Roca Line, in Llavallol, Argentina, April 11, 2017. (Xinhua/Martin Zabala)