TDG Holding (天通控股控股份有限公司) is a company that engages in the research and development, manufacturing, and marketing of electronic materials, electronic components, and intelligent equipment. It offers ferrite sheets, metal powder cores, microwave components and modules, as well as photoelectric, crystal material, powder molding, and environmental equipment. In addition, the company makes investments through venture capital and private equity financing with a focus on connectivity, smart technologies, and sustainability.