Oriental Consultants Holdings Co., Ltd. engages in the provision of infrastructure consulting services. It operates through the following segments: Infrastructure Management Services, Environmental Management, and Others. The Infrastructure Management Services segment offers intellectual services such as planning, research, design, evaluation, and coaching. The Environmental Management segment deals with construction, survey, environmental cleanup, and demolition works. The Others segment includes construction management, measurement control, information technology solutions related to asset management, temporary staffing, resources management and business process outsourcing. The company was founded on August 28, 2006 and is headquartered in Tokyo, Japan.