With the widespread adoption of third-generation semiconductor technology, the new energy, high-end industrial control, and energy storage industries are rapidly iterating, and the domestic magnetic core industry is undergoing structural upgrading. In 2026, there will be three major trends in the core development of the industry: high-frequency, small-scale integration, and localization of the supply chain. Traditional low-frequency and large volume magnetic cores are no longer suitable for the current demand of high-frequency inverters and high-speed electronic control equipment. Low loss and high stability magnetic cores have become a must-have in the market. Driven by the dual policies of carbon neutrality and domestic substitution, the production capacity of silicon steel, amorphous, and nanocrystalline magnetic cores in China continues to be released, gradually breaking the long-term monopoly pattern of overseas brands. At the same time, terminal devices are upgrading towards high power, small size, and high heat dissipation, forcing magnetic core products to become ultra-thin and undergo high-precision iterations. Domestic magnetic core manufacturers with full category mass production capabilities, strict quality control systems, and high-end qualification certifications will continue to seize market share and become the core supporting force of the new energy and high-end equipment industry chain.