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person:("wang haijun")
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person:("wang aijun")
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person:("wang baojun")
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person:("wang kaijun")
Building outer wall paint spraying unmanned aerial vehicle
Customized high-speed rail seat capable of achieving arrival reminding and arrival reminding system
Emergency rescue unmanned aerial vehicle for glass breaking of high-rise building
Fire extinguishing unmanned aerial vehicle for high-rise building
Stabilizing device based on spraying pipe spraying unmanned aerial vehicle