What are the domestic shield machine manufacturers now? The more complete the better! Thank you! ! !

It's quite complete The China Railway Tunnel Equipment Manufacturing Co., Ltd. you mentioned started to move to Xinxiang Zhengzhou Economic Development Zone today. The "Manufacturing Company under Luoyang China Railway Tunnel Bureau" mentioned on the first floor and China Railway Equipment mentioned on the third floor are actually one company. Before 2009, it was the Tunnel Bureau. Later, it was taken back by China Railway, but its name was changed. Changsha China Railway Construction, Guangzhou Herrick, Shanghai Tunnel, Beizhong, Shenzhong, China South Locomotive, citic heavy industries and Hubei Tiandi Heavy Industry are not all in operation. As for some famous things, they are herrick, Shanghai Tunnel and China Railway Equipment. After all, the imported technology still needs a long time to digest and absorb. At present, domestic products with independent research and development capabilities include Shanghai Tunnel and China Railway Equipment. China Railway Equipment absorbs herrick's technology, while China Railway Construction draws lessons from China Railway Equipment.