Headquartered in Chikusei, Japan, Nippon Denkai, Ltd. is a company established... Headquartered in Chikusei, Japan, Nippon Denkai, Ltd. is a company established in 1958 that focuses on the development, manufacturing, and sales of electrodeposited copper foils. These specialized foils are critical components utilized in a diverse array of electronic devices, such as lithium-ion batteries and printed circuit boards.