5th China Helicopter Exposition opens in north China's Tianjin
Visitors view an exhibit during the ongoing 5th China Helicopter Exposition in north China's Tianjin, Oct. 10, 2019. The 5th China Helicopter Exposition runs from Oct. 10 to 13.
Visitors experience VR (virtual reality) devices during the ongoing 5th China Helicopter Exposition in north China's Tianjin, Oct. 10, 2019.
A helicopter takes part in a comprehensive rescue exercise during the ongoing 5th China Helicopter Exposition in north China's Tianjin, Oct. 10, 2019.
A visitor views an unmanned aerial vehicle during the ongoing 5th China Helicopter Exposition in north China's Tianjin.
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