Core Viewpoint - The successful application of the special steel Q690C developed by Baogang Group in the construction of the Haitai Yangtze River Tunnel marks a significant advancement in high-end special steel materials and demonstrates the company's technical strength in supporting major national projects [1][5]. Group 1 - Baogang Group has provided all the steel for the tunnel's embedded components, showcasing its capability in delivering ultra-high strength and toughness materials for this major engineering project [1][3]. - The Q690C material used in the tunnel represents an innovative shift from traditional carbon steel or low-alloy steel, offering superior low-temperature toughness, high strength, fatigue resistance, impact resistance, corrosion resistance, and weldability [3][5]. - The company quickly mobilized a collaborative mechanism among various departments to meet the high demands of this challenging order, successfully rolling out over 3,000 tons of Q690C special steel for the tunnel [3][5]. Group 2 - The successful application of Q690C in the Haitai Yangtze River Tunnel not only signifies a major breakthrough for Baogang Group in the high-end special steel sector but also highlights its commitment to national strategic projects [5]. - The company aims to continuously drive product upgrades and iterations through new production capabilities, positioning "Baogang manufacturing" as a robust support for major national engineering projects [5].