Which "government" department is responsible for Chengdu Railway Bureau Road and Chongqing Rail Group respectively?

Chengdu Railway Bureau belongs to China Railway Corporation. Chongqing Rail Transit Group is affiliated to Chongqing Urban Traffic Development Investment (Group) Co., Ltd. ..

Simply put, Chengdu Railway Bureau is a central enterprise, and Chongqing Rail Group is a local state-owned enterprise (Chongqing Communications Development Investment Co., Ltd. is a subsidiary of Chongqing SASAC).