CTI Engineering Co. Ltd. engages in the provision of engineering consultation services. It operates through the Domestic Construction Consulting and Overseas Construction Consulting segments. The Domestic Construction Consulting segment offers support for contractors; construction management, operation, and maintenance; geological survey work; and architectural design and supervision work. The Overseas Construction Consulting segment handles building-related business that includes consulting services for construction such as excavation of overseas projects; master plan formulation, planning, and research; and structural and equipment design. The company was founded on April 4, 1963 and is headquartered in Tokyo, Japan.