Cold-rolled oriented high-quality silicon steel materials with low iron loss and high magnetic permeability, with thicknesses of 0.05mm, 0.08mm, 0.10mm, 0.20mm, 0.23mm, 0.27mm, 0.30mm and 0.35mm, and the minimum material width being 5mm. Provide various shapes of cores: ring-shaped core, elliptical core, rectangular core, C-shaped cross-section core, gap core, and open-close type transformer core