There was a mistake upstairs. The Engineering Bureau under the Ministry of Railways is responsible for construction, not management. Responsible for the management of specific railway bureaus, namely Guangzhou Railway (Company) Bureau, Harbin Railway Bureau, Shenyang Railway Bureau, Beijing Railway Bureau, Liuzhou Railway Bureau, Chengdu Railway Bureau, kunming railway administration Railway Bureau, lanzhou railway administration Railway Bureau, Urumqi Railway Bureau, taiyuan railway administration Railway Bureau, Hohhot Railway Bureau, Zhengzhou Railway Bureau, Wuhan Railway Bureau, Xi Railway Bureau, Jinan Railway Bureau, Shanghai Railway Bureau, Nanchang Railway Bureau and Qinghai-Tibet Railway Company.
If you want to promote the national railway system, of course, you must sign a contract with the Ministry of Railways, which will give you a fee. If you just want to promote it in some sites, you just need to find a specific railway bureau. If you only want to promote it in one station, then find a station to do it. If you want to promote private railways, look for railway companies.
If you want to promote it to the whole country, you can only discuss it with the Ministry of Railways. No other department can decide to implement technology nationwide.