Oak-Mitsui is a wholly owned subsidiary of Mitsui Kinzoku, the world’s largest manufacturer of copper foils and high performance products for the electronics industry. Headquartered in Camden, SC, with locations in Hoosi......Oak-Mitsui is a wholly owned subsidiary of Mitsui Kinzoku, the world’s largest manufacturer of copper foils and high performance products for the electronics industry. Headquartered in Camden, SC, with locations in Hoosick Falls, New York and Riverside, CA, Oak-Mitsui specializes in the development and production of world class performance foils, Aluminum Bonded Copper and other lamination products, and Advanced Technology Products including FaradFlex®.