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Photo taken on July 9, 2014 shows a multi-rotor unmanned aerial vehicle (UAV) which is on display at the “China UAV conference and exposition” in Beijing. The event features 70 types of latest unmanned planes made for different industries including military, agriculture, electricity, and meteorology. Starting from 2006, four sessions of the event has been held. [Photo: China News Service/ Chen Haifeng]
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