Cold-rolled silicon steel core with a selection of high-flux winding is made under the protection of inert gas in a continuous annealing and low-stress high-viscosity epoxy vacuum impregnation insulation paint dried, cut for precision grinding, to ensure performance the best recovery, with the advantages of low loss and high saturation. At the same time, the center enables customers to voltage, current use of the different needs of different raw materials preparation, design and production to meet customer needs in order to achieve lower customer prices and costs. The center products are used: power transformer, transformers, inductors, chokes, ballasts, sensors, regulators, welding transformers, special transformers, etc.