Jiujiang Defu Technology Co., Limited is a Chinese company that, along with its subsidiaries, researches, develops, produces, and sells electrolytic copper foils in China and internationally. Its product range includes lithium copper foils such as ordinary strength and medium intensity double-sided lithium battery foils, high strength double-sided lithium battery foils, ultra-high strength 60 double-sided battery foils, low elastic modulus double-sided lithium battery foils, high elongation double-sided lithium battery foils, and PCF porous copper foils, as well as double-sided lithium battery copper foil with high elastic modulus, ACF atomized foil, and SCF foil. The company also provides copper foil for sealing loading plates, high frequency signal, high-speed transmission, fine lines, automotive circuit boards, and soft plates, plus special and outer pressed copper oil. In addition, it is involved in electronic materials and equipment manufacturing, lab reagents, chemical reagents, products and raw materials, organosilicon LED adhesives, fungicides, and copper foil additives, and offers titanium anodes for electrolytic copper foil, PCB electroplating, and other fields. It also engages in property management, housing rental, investment, import and export trade, and research and development of electronic and fine chemicals. Founded in 1985, the company is headquartered in Chaisang, China.