1. Yingque Yingtai (Changsha) Power Electronics Co., Ltd. is a wholly-owned subsidiary of Xi Tian Kai Railway Electric Co., Ltd., located in Guanshaling Street, Yuelu District, Changsha City, Hunan Province.
2. Zhuhai Laiji Optoelectronic Co., Ltd. is a subsidiary of Xi 'an Tiankai Rail Electric Co., Ltd., located in the Science and Technology Innovation Coastal Science and Technology Park in the north of Zhuhai, Special Economic Zone.