1. State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu, People’s Republic of China
2. China Railway Construction Heavy Industry Co., Ltd., Changsha, People’s Republic of China
3. China Railway Eryuan Engineering Group Co., Ltd., Chengdu, People’s Republic of China
4. CRRC Qingdao Sifang Co., Ltd., Qingdao, People’s Republic of China
5. CRRC Zhuzhou Locomotive Co., Ltd., Zhuzhou, People’s Republic of China