Group 1 - The traditional belief that "long processes must be high carbon" is being challenged as Wuhan Iron and Steel Corporation successfully produced steel with over 50% scrap steel content, marking a significant breakthrough in green low-carbon smelting technology [1] - Increasing the scrap steel ratio is crucial for reducing carbon emissions, with a 10% increase in scrap steel leading to approximately a 6% reduction in CO2 emissions per ton of steel [1] - Other companies, such as Hunan Lianyuan Steel and Shougang Jingtang, have also achieved high scrap steel ratios in their production processes, with reductions in CO2 emissions of 43% and successful trials with over 55% scrap steel, respectively [1][2] Group 2 - The advancements in scrap steel ratios indicate that the steel industry's low-carbon transformation is moving from technical demonstration to large-scale application, with the current average scrap steel ratio in the industry around 20% [2] - Key technological breakthroughs in temperature control and composition stability in steelmaking processes have enabled these advancements, with companies employing various innovative methods to achieve high scrap steel ratios [2] - The large scrap steel ratio technology has been successfully applied to high-end products such as automotive sheets and home appliance sheets, demonstrating its ability to meet stringent quality requirements while achieving carbon reduction goals [3] Group 3 - The market favorability of large scrap steel ratio technology stems from its significant advantages in environmental protection, raw materials, and product quality [3] - Other innovative technologies, such as Baosteel's full scrap electric furnace smelting and Hebei Iron and Steel's hydrogen-based direct reduction iron technology, are also contributing to the industry's efforts towards near-zero carbon emissions [3] - Maximizing the use of scrap steel is viewed as the most practical and effective choice for the steel industry to achieve green low-carbon development until more advanced technologies like hydrogen metallurgy are fully developed [3]