Abstract: Ultra-thin silicon steel is a core soft magnetic material for high-efficiency motors and transformers, and also serves as an important indicator of a country's iron and steel industrial capability. This paper reviews the global development status of the ultra-thin silicon steel industry and introduces the self-bonding coating production line of Shougang Zhixin. It discusses the characteristics of ultra-thin silicon steel coated products, key processes and equipment, as well as measures for stable production and product quality control. As the world's largest producer and consumer of silicon steel, China still relies on imports for high-end products, and core manufacturing technologies including precision rolling and surface coating are confronted with technological bottlenecks. Focusing on the current situation of the ultra-thin silicon steel industry, this paper analyzes its technical hurdles and market challenges, and explores approaches for technological breakthrough and industrial upgrading, aiming to provide references for the independent development and high-end transformation of China's ultra-thin silicon steel sector.