Recently, principal leaders of the Guangzhou Command of China Railway Guangzhou Group Co., Ltd. and Xiong'an High-Speed Railway Co., Ltd. successively visited the Tianjin segment base of China Railway 14th Bureau Group to conduct research, touring the green intelligent production line for large-diameter shield segments on site and setting out expectations for the base's construction and next-stage work. Zhou Changjin, General Manager of China Railway 14th Bureau Group, accompanied the research visit.

On October 25, Guo Fei, Party Secretary of the Guangzhou Command of China Railway Guangzhou Group Co., Ltd., and Wang Haihan, Deputy Commander, led a delegation to the base for research. They went deep into the workshop, touring the production line, the BIM intelligent control platform, and the intelligent inspection system on site, and visited the Party building activity room and the industrial workers' community. They exchanged views on innovation in intelligent segment production technology and intelligent box culvert production technology, praised China Railway 14th Bureau Group's "large shield construction" and "prefabricated housing and bridge segments," affirmed the technological innovation and intelligent production of large-diameter shield segment prefabrication, and expressed the expectation that the project would achieve greater breakthroughs in smart site construction and the R&D and application of intelligent equipment.

On October 26, Zhang Yinglong, Party Secretary and Chairman of Xiong'an High-Speed Railway Co., Ltd., led a delegation to the base for research, inspecting and guiding on site the production progress, the application of intelligent steel rebar inspection, and standardized management, and gaining a comprehensive understanding of the base's prefabrication processes, technological innovation, application of intelligent equipment, and standardization efforts. Zhang Yinglong fully affirmed the base's construction and required it to continuously raise the level of segment automation and intelligence while ensuring safety and quality, so as to lay a solid foundation for high-quality development with outstanding products. During the visit, the two sides held in-depth discussions on further advancing the centralized prefabrication and factory-based production of prefabricated building components. 
During the research visit, Zhou Changjin stated that China Railway 14th Bureau Group had created a new-generation green intelligent production line for large-diameter shield segments, laying the foundation for the high-quality construction of key railway projects and contributing to the "China Railway 14th Bureau Group Large Shield" brand. He required that the Tianjin base, as the prefabrication and manufacturing base with the highest level of intelligence, the highest standard of standardization, and the highest level of systematic management in China at present, maintain its advantages in standardized management, intelligent manufacturing, process innovation, and smart Party building, further raise its level of intelligence, and thoroughly explore research on the factory-based, large-scale, and industrialized production of regional prefabricated products, so as to achieve resource integration and efficient utilization and realize sustainable rolling development.
The Tianjin segment prefabrication base of China Railway 14th Bureau Group is the largest high-speed railway shield segment prefabrication factory in China. Based on a BIM control platform, it integrates functions such as intelligent equipment control, automated operations, automatic information collection, and informatized control of the production process. It has two automated intelligent segment production lines and China's first integral box culvert automated flow production line, and can produce 500 segments and 500 box culverts per month. It undertakes the prefabrication of segments and box culverts for Tianjin Airport Tunnels No. 1 and No. 2 of the Beijing-Binhai Railway and for the Jingu Haihe River Tunnel of the Tianjin-Weifang Railway.