Photo taken on Sept. 17, 2019 shows staff working at the workshop of the CRRC Zhuzhou Electric Co., Ltd. in Zhuzhou City, central China's Hunan Province. CRRC Zhuzhou Electric Co., Ltd. unveiled the key components of its magnetic-levitation train with a designed speed of 600 kph in central China's Hunan Province Tuesday. (Photo by Chen Sihan/Xinhua)