Kohoku Kogyo CO.,LTD. manufactures and sells lead terminals for aluminum electrolytic capacitors, and optical components and devices for optical fiber communication network in Japan. It offers lead terminals for aluminum electrolytic capacitors, including standard type, burr-free type, edge-free type, one-side rib type, round 4-corner type, vibration-resistant type, front-back discriminative type, welded resin coating, and round bar resin coating processing, as well as rounding, anodizing, and lead terminal materials. The company also provides optical communication parts and devices, such as in-line optical isolators, hybrid optical isolators, optical filter devices, optical circulators, variable light attenuators, polarized optical fiber processed products, multi-core optical fiber specially processed products, faraday rotators, high power laser assemblies with end cap and AR coating, high purity silica glasses, and optical fiber preforms. Kohoku Kogyo CO.,LTD. was incorporated in 1959 and is headquartered in Nagahama, Japan.