Keen Ocean International Holding Limited, an investment holding company, designs, develops, manufactures, and sells transformers, switching mode power supplies, electronic parts and components, and electric healthcare products in Hong Kong and internationally. The company offers toroidal and EI transformers, steel core products, PCB assemblies, power amplifiers, inductors, battery chargers, and C type core products. It also trades in transformers, switching mode power supplies, and electronic parts and components. The company sells its transformers and power supply products under the Keen Ocean brand to manufacturers and trading entities. The company was founded in 2000 and is headquartered in Tsuen Wan, Hong Kong. Keen Ocean International Holding Limited is a subsidiary of Cyber Goodie Limited.