What's the name of the labor dispatch of China Railway No.12 Bureau and No.1 Company?

No, according to official website, a company of China Railway 12th Bureau, we know that there is no labor dispatch, not to mention the name. The predecessor of China Railway 12th Bureau Group No.1 Engineering Co., Ltd. was the Sixth Regiment of the Second Division of the Chinese People's Liberation Army Railway Corps. 1984 was reorganized into the first engineering department of the 12th Engineering Bureau of the Ministry of Railways, renamed in 2000 according to the modern enterprise system, and was under the jurisdiction of the State-owned Assets Supervision and Administration Commission of China Railway Construction Corporation.