Chinese President Xi Jinping (2nd R) visits the National Graphene Institute at the University of Manchester in Manchester, Britain, Oct. 23, 2015. (Photo: Xinhua/Zhang Duo)
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Chinese President Xi Jinping (2nd R) visits the National Graphene Institute at the University of Manchester in Manchester, Britain, Oct. 23, 2015. (Photo: Xinhua/Zhang Duo)
