USL Silicon Steel (Ultra-Stable Low-Loss Silicon Steel) is the masterwork product of PTTX (Putian Iron Core) honed over two decades of dedication. It boasts exceptional stability, low iron loss, superior surface quality, and strong resistance to DC bias, perfectly aligning with the material requirements of the "Minimum Allowable Values of Energy Efficiency and Energy Efficiency Grades for Power Transformers" (GB 20052-2024) standard.

Through years of lean production, PTTX can stably supply high-grade USL silicon steel products of grade 85 and above, fully meeting market demands for high-performance silicon steel materials. This supports transformer manufacturers in achieving energy efficiency upgrades and drives the green, low-carbon transformation of the power energy sector.