造价堪比黄金，美日垄断几十年的超纯铁技术，被中国白菜价拿下

Core Insights - The article discusses China's breakthrough in a core technology that has been monopolized by the US and Japan for nearly a century, specifically in the production of ultra-pure iron, which was previously extremely expensive and difficult to obtain [1][12][30] - This technological advancement has allowed China to achieve large-scale production of ultra-pure iron, significantly reducing costs and breaking the long-standing monopoly [12][28] Group 1: Importance of Ultra-Pure Iron - Ultra-pure iron, with a purity level exceeding 99.999%, is crucial for high-end manufacturing, including applications in electronics, aerospace, and medical equipment [7][8][10] - The properties of ultra-pure iron, such as high corrosion resistance and optimal performance characteristics, make it essential for advanced industrial applications [7][10] Group 2: Historical Context and Monopoly - The technology for producing ultra-pure iron was first standardized by the American company Amco in 1909, leading to a long-standing US-Japan monopoly in this field [13] - Japanese companies further refined the technology, creating stringent export rules and maintaining control over production and pricing [13][15] Group 3: Challenges in Production - Achieving ultra-pure iron involves overcoming significant technical challenges, particularly in removing trace impurities, which has historically limited production capabilities [17][19][21] - The complexity of the purification process has made it difficult for domestic companies to compete, often forcing them to use lower-quality materials [15][19] Group 4: Breakthrough and Technological Advancement - A research team from Shanghai University and Hebei Longfengshan Casting Industry developed a unique three-step purification process, achieving a purity of 99.9992% and enabling large-scale production [23][25] - This breakthrough not only allows for competitive pricing but also ensures that domestic companies can secure a stable supply of ultra-pure iron without reliance on imports [26][28] Group 5: Implications for Domestic Industry - The ability to produce ultra-pure iron at a fraction of the previous cost (one-fifth) enhances the competitiveness of domestic industries in global markets [28] - This development strengthens the security of supply chains for high-end manufacturing sectors, allowing for greater independence and innovation in technology [28][30]