from "LIAONING RIBAO" (Liaoning Daily)CHINA'S first ultra-light helicopter successfully completed a test flight at Tianjin Airport last September. The designer and pilot is Dong Dawei, 37 years...
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from "LIAONING RIBAO" (Liaoning Daily)CHINA'S first ultra-light helicopter successfully completed a test flight at Tianjin Airport last September. The designer and pilot is Dong Dawei, 37 years...