Otsuka Corporation (Otsuka) is a technology company that offers system integration and service and support. The company offers system integration services such as sales of computers, copiers, communications equipment and software development, among others. Its support services include IT and OA supplies, educational support, maintenance, and others. Otsuka also offers management systems and collaborative software to cover various specialized fields such as CAD and web technologies. It also offers various support services to its clients. The company has presence in Tokyo, Sapporo, Sendai, Utsunomiya, and others. Otsuka is headquartered in Chiyoda-ku, Japan.