BI MAG focuses on the R&D and production of power ferrite cores and high permeability ferrite cores, finalizing more than 10 material series and hundreds of core varieties such as low loss materials, wide temperature low loss materials, high Bs materials, high Bs wide temperature materials, wide frequency wide temperature low loss materials, high-frequency low loss materials, etc. The products are widely used in new energy vehicles, charging piles, optical storage and charging, cloud servers, green high-power lighting, power electronics, digital communications, the Internet, electromagnetic compatibility and anti-interference suppression (EMC/EMI), displays (LED/LCD) and other fields.