China and Hao Tong have several units in Changsha.

There are two units in Changsha. China Railway Communication Signal Co., Ltd. (China Communication Signal Company in Chinese and CRSC in English) was founded by China Railway Communication Signal Group Co., Ltd., China Machinery Industry Group Co., Ltd., China Chengtong Holding Group Co., Ltd., China Guo Xin Holding Co., Ltd. and Jinzhong Jiacheng Investment Management Co., Ltd. With a registered capital of 4.5 billion yuan, it has a complete industrial chain integrating system integration, scientific research and design, equipment manufacturing, engineering installation and technical services in the field of rail transit control, and is the unit that compiles the standards and specifications of China railway communication signal system. Headquartered in Beijing. Wholly-owned and holding enterprises 18, 2 engineering companies. I hope I can help you.