File photo taken on Feb. 6, 2015 shows the empennage of the two-seater electric aircraft RX1E in Shenyang, northeast China's Liaoning Province. After the test flights in low temperatures, RX1E has been put into production recently. The domestically developed electric aircraft has a 14.5-meter wingspan and a maximum payload of 230 kg. It can fly at an altitude of 3,000 meters. (Photo: Xinhua/Yao Jianfeng)
