The 7th Zhejiang international unmanned aircraft competition took place on Oct. 24. Unfortunately, an unmanned helicopter from Hangzhou XingJi Helicopters crashed just meters away from the spectators less than three minutes into its demonstration.
The 7th Zhejiang international unmanned aircraft competition took place on Oct. 24. Unfortunately, an unmanned helicopter from Hangzhou XingJi Helicopters crashed just meters away from the spectators less than three minutes into its demonstration.
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