A model of smart pig breeding system is displayed during the preview of Jiangxi International Mobile Internet of Things Expo 2019 in Huaquan Village of Yingtan City, east China's Jiangxi Province, July 17, 2019. Jiangxi International Mobile Internet of Things Expo 2019 is held here on July 18. (Xinhua/Zhou Mi)
Preview of Jiangxi Int'l Mobile Internet of Things Expo 2019
Source: Xinhua| 2019-07-18 11:29:47|Editor: Yang Yi
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