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Photo taken on May 31, 2019 shows the production line of bullet train of CRRC Tangshan Co. Ltd. in Tangshan City, north China's Hebei Province. (Xinhua/Mu Yu)
Xinhua Headlines: Tech know-how modernizes China's century-old industrial city
Source: Xinhua| 2019-06-23 17:44:22|Editor: mingmei
