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Smart China Expo kicks off in Chongqing

By Wang Junwei | chinadaily.com.cn | Updated: 2019-08-26 15:41
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A heavy-lift and multi-purpose unmanned helicopter for tasks such as emergency rescue and geological exploration is on display at the Chongqing International Expo Center in Chongqing, Aug 26, 2019. [Photo by Wang Junwei/chinadaily.com.cn]
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