Jiujiang Defu Technology Co., Limited engages in the research, development, production, and sale of electrolytic copper foil in China and internationally. The company offers lithium copper foils, such as double-sided polished copper foil for new energy vehicle batteries; high-temperature and high-ductility copper foil (HTE); and flexible copper foil (FCF) for electronic circuits used in energy storage, automotive power, and 3C digital batteries, as well as copper foil for electronic circuits. It also develops and provides hyper very low-profile copper foil and reverse treated copper foil for 5G application; and other special copper foils. The company was founded in 1985 and is headquartered in Jiujiang, China.