China Railway 14th Bureau Beijing East Sixth Ring Road Project. Since its inception, the domestically produced 16 meter diameter shield tunneling machine "Jinghua" has steadily excavated, successfully crossing multiple risk sources such as the "Happy Song" commercial complex. It has achieved monthly excavation of 368 meters and daily excavation of 24 meters, with all cutting tools provided by Tianyou Tunnel! Wishing you a speedy connection