Unmanned devices displayed at Airshow China 2021

Photo taken on Sept. 28, 2021 shows an unmanned aerial vehicle (UAV) for surveillance purposes displayed at the 13th China International Aviation and Aerospace Exhibition, or Airshow China 2021, in Zhuhai, south China's Guangdong Province. (Xinhua/Deng Hua)

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Source:Xinhuanet
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