Premium High Efficiency Cold Rolled Silicon Steel Transformer Coil for Optimal Performance. High Efficiency Material: Oriented silicon steel with high permeability and low iron loss for energy saving. Premium Raw Materials: Sourced from Bao-steel and Wu-steel for superior quality and consistency. Advanced Manufacturing: Produced with advanced German slitting and Georg 800 cross-cutting systems. Strict Quality Control: 100% inspection including visual and function checks before shipment. ISO Certified Production: Manufacturing follows ISO9001:2015 standards with pre-order engineering calculations. Flexible Customization: Full customization, minor customization, and design-based options available. High Production Capacity: Annual output exceeds 100,000 tons of transformer cores. Experienced Supplier: Over 30 years of experience as a pioneer in CRGO silicon steel since 1988.