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Photo taken on Sept. 18, 2018 shows a new-generation carbon-fiber metro vehicle by CRRC at the "InnoTrans" railway industry trade fair in Berlin, Germany. (Xinhua/Shan Yuqi)
Photo taken on Sept. 18, 2018 shows a new-generation carbon-fiber metro vehicle by CRRC at the "InnoTrans" railway industry trade fair in Berlin, Germany. (Xinhua/Shan Yuqi)