As a core component of power systems, power transmission and distribution transformers undertake the critical tasks of voltage conversion, energy transmission, and grid stabilization. In this process, enameled wire—serving as the core material for transformer windings—directly determines the transformer's efficiency, reliability, and service life. Driven by growing electricity demand and the advancement of the energy transition, enameled magnet wire technology is rapidly evolving toward higher performance, lower energy loss, and greater environmental sustainability. To enhance the corona resistance and voltage impulse withstand capability of windings in high-frequency generators, variable-frequency motors, and traction motors, corona-resistant enameled flat magnet wire is the preferred choice.