Is China Railway Construction a state-owned enterprise or a central enterprise, and at what level?

China Railway Construction is a central enterprise. According to official website's inquiry, China Railway Construction Bridge Engineering Bureau Group Co., Ltd. and China Railway Construction Bridge Engineering Bureau Group Co., Ltd. are the 43rd central enterprises in China Railway Construction's top 500 in the world in 2023. Formerly known as the Third Division of Railway Corps, it was transformed into the 13th Engineering Bureau of the Ministry of Railways in 1984+0, and was transformed into China Railway 13th Bureau Group Co., Ltd. in April 2006. The Group won Luban Award 17, Zhan Tianyou Award 19, 46 national quality engineering awards, 6 national scientific and technological progress awards, second prize of national technological invention 1, 23 national construction methods, more than 0,000 national patents 1 000, and more than 200 invention patents.