[Shenjiang No. 1 participated in the construction of the deepest submarine tunnel] On August 23, China's self-developed subsea tunnel shield machine rolled off the assembly line in Changsha, Hunan. The equipment shield machine has an excavation diameter of 13.42 meters, a total length of 130 meters, and a total weight of 3,800 tons. It will participate in the construction of China's deepest submarine tunnel-the Zhujiangkou Tunnel of the Shenzhen-Jiangmen Railway. The Pearl River Mouth Tunnel is a key control project of the Deep River Railway. "Shenjiang No. 1" crosses the section with a total length of 3590 meters. The entire line is tunneled downhill for a long distance and passes through the Pearl River estuary. The engineering geological conditions are extremely complicated. Editor/Xu Shengpeng

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• 2026.05.26 15:42
• [China's first cross sea bridge collision prevention upgrade project]
• On May 26, 2026, the 48 steel pipe pile foundations of the Hangzhou Bay Cross sea Bridge anti-collision facility upgrade and renovation project undertaken by CCCC First Highway Engineering Group Co., Ltd. Fourth Company were all completed. The first major node of the anti-collision renovation project of the first cross sea bridge in China was successfully completed, and the construction phase of the pier cofferdam entered the stage comprehensively. The project adopts the first four in one joint anti-collision system in China. After completion, the anti-collision capacity of the bridge will be increased from 5000 tons to 20000 tons, filling the gap in the systematic anti-collision upgrade of existing cross sea bridges in China. Editor/Cheng Liting

• 2026.05.26 15:42
• [Guizhou Kaiyang Expansion of Lithium Battery Positive Electrode Material Project]
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