Founded in 1984, TDG Holding co., Ltd (Stock Code: 600330) is a high-tech enterprise and has a number of holding companies and shareholding companies. Now TDG has formed four major business segments: electronic materials, electronic module, green energy and smart equipment, the business covers the entire industrial chain of electronic information materials. TDG has been specialized in R&D and production of soft magnetic materials for nearly 40 years. The products include ferrite cores, magnetic powder cores, ferrite sheet and molding choke. They are widely used in the field of electronic technology, such as new energy vehicles, PV and energy storage, 5G communication, data centers, servers, smart homes, medical care and consumer electronics.