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Boying T1400 Tandem Rotor Unmanned Helicopter completes maiden flight in NE China

Xinhua | Updated: 2025-10-30 20:02
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This photo taken on Oct 30, 2025 shows Boying T1400 Tandem Rotor Unmanned Helicopter of United Aircraft in flight in Harbin, Northeast China's Heilongjiang province. [Photo/Xinhua]
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