TDG Holding Co., Ltd. engages in the research and development, manufacture, and marketing of electronic materials and components, and other equipment in China. The company offers electronic materials, such as ferrite sheets for NFC antennas; soft ferrite cores for wireless chargers and LED power supplies; soft magnetic cores for automotive electronics and EV wireless charging, and energy; cores for EMI suppression and consumer electronics; stress-insensitive, high bias, low core loss, EMI-suppression, and thermal shock resistance NiZn ferrites; metal powder cores; sapphire crystal products; and piezo-electric crystal materials. It also provides microwave components and modules, and EMS services; and photoelectric equipment, crystal material equipment, powder molding equipment, and environmental equipment. The company was founded in 1984 and is headquartered in Haining, China.