Cosel Co Ltd is a Japan-based company mainly engaged in the manufacture and sale of direct current stabilized power supplies. The Company conducts business through five segments. The Japan Production and Sales segment manufactures and sells unit power supplies, onboard power supplies, and noise filters, and manufactures component transformers used in power supplies. The North America Sales segment sells unit power supplies, onboard power supplies, and noise filters. The Europe Production and Sales segment sells unit power supplies, onboard power supplies, noise filters, and other products. The Asia Sales segment handles sales of unit power supplies, onboard power supplies, and noise filters. The China Production segment manufactures unit power supplies and exports these products manufactured in China to each sales business company.