China Railway Tunnel Co., Ltd. is a subsidiary of China Railway Tunnel Group Co., Ltd. It was originally intended to concentrate high-quality assets on the market, so it was named "Tunnel Shares". Later, China Railway Group was listed as a whole and its subordinates 23 were stopped. Separate listing of grade-level enterprises. Tunnel Co., Ltd. has the same nature as "China Railway Tunnel No. 2 Co., Ltd."
China Railway Tunnel Group (CTG) is the largest domestic enterprise group in the field of tunnels and underground engineering that integrates the four major functions of survey and design, construction, scientific research and development, and machinery repair.
The predecessor of China Railway Tunnel Group was the Tunnel Engineering Bureau of the Ministry of Railways, which was established with the approval of the State Council in October 1978. It was later renamed "China Railway Tunnel Engineering Bureau" and restructured into "China Railway Tunnel Group Co., Ltd." in May 2001. Headquartered in Luoyang, Henan, it is affiliated to China Railway Engineering Group Co., Ltd. In 2008, it was affiliated to China Railway Group Co., Ltd., and its full name is "China Railway Tunnel Group Co., Ltd.".
Shunji Group Co., Ltd. is a joint-stock company jointly established by Shi Shunji as the main sponsor and other investors. It is a large private construction enterprise for highway projects in Zhejiang Province. The headquarters is located in Yongjia, Wenzhou.