Shanghai Tianhao Industrial Co., Ltd. has signed a strategic cooperation agreement with Shaanxi Construction Steel Structure Co., Ltd. in Xi 'an on July 1, 2021.

On August 17th, with the cutterhead of the "Shanhe" shield machine with a diameter of 17.5 meters breaking through the ground, the shield section of the Yellow River Tunnel on Huanggang Road in Jinan City, invested and constructed by Jinan Urban Construction Group and undertaken by China Railway 14th Bureau Group, was successfully excavated. This world's largest diameter underwater shield tunnel was successfully connected.

Recently, Jinan Huanggang Road through the yellow tunnel after the festival to speed up the construction progress, Jinan Huanggang Road through the yellow tunnel has been excavated nearly 1500 meters, it is planned to achieve the end of 2025 through the tunnel, in September 2026 open to operation.