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Jeffrey Tung, head of R&D of 3M (China), poses for a photo at the Sci-tech Life exhibition area during the second China International Import Expo (CIIE) in Shanghai, east China, Nov. 7, 2019. (Xinhua/Zhang Xiaoyu)
Jeffrey Tung, head of R&D of 3M (China), poses for a photo at the Sci-tech Life exhibition area during the second China International Import Expo (CIIE) in Shanghai, east China, Nov. 7, 2019. (Xinhua/Zhang Xiaoyu)