China's heaviest cargo unmanned aerial vehicle (UAV), the AT200, undergoes a test flight in Pucheng County, Northwest China’s Shaanxi Province, Oct. 30, 2017. The AT200 drone, jointly developed by several research institutes and companies, made a successful 28-minute flight. The UAV has a maximum flying speed of 313 km per hour, a flight range of 2,183 kilometers, and a 6,098-meter service ceiling. (Photo/VCG)
