The east artificial Island constructed by the China Railway Tunnel Bureau is the gateway project to the Shenzhen end of the project. As the underwater hub interchange of domestic expressways, the east artificial island is the key to underwater interconnection. Among them, the weir section tunnel is also the gateway for the entire deep-middle channel to achieve underwater interconnection. It connects the submerged pipe tunnel of the deep-middle channel and the underwater interchange of the east artificial island as one, which has the function of transition and convergence. This time, the whole line was fully connected, and the east artificial island received high-frequency attention from mainstream media such as CCTV, which was wonderful.     The east artificial island constructed by the China Railway Tunnel Bureau is the gateway to the Shenzhen end of the project. The reinforced connection sleeve used in the project is provided by Shenzhen Gulix Building Materials Co., Ltd. Shenzhen Gulix Building Materials Co., Ltd. is a well-known brand enterprise integrating the production, sales, construction and technical services of steel connecting sleeves in China. With the continuous development of Gulix and the improvement of brand influence, Gulix has many branches (currently it has operation centers in Shenzhen, Guangzhou, Foshan, Zhongshan, Jieyang, Kunming, Chengdu, Changsha, Shandong, etc.), and the advantages of more timely distribution and service, and lower customer costs are becoming more and more obvious. ThisIt is also the practice and presentation of the core value concept of “customer and product excellence” of Gulix. In recent years, Gulix has been fortunate enough to participate in many large-scale infrastructure projects at home and abroad. While practicing the mission of “seeking safety for buildings”, Gulix people have also contributed to urban construction and urban economic growth.