IHI Corp is engaged in the resources, energy and environment, social infrastructure, industrial systems and general machinery, and aerospace and defense. The Company operates in four business segments. Resource & Energy & Environment segment provides land-use prime mover plants, marine engines and other prime movers, carbon solutions, and nuclear power equipment. Social Infrastructure segment provides bridges and sluices, transportation systems, shield systems, concrete construction materials, and urban development. Industrial System & General-Purpose Machinery segment provides vehicle turbochargers, parking, rotating machinery, heat and surface treatment, material handling equipment, and logistics and industrial systems machinery. Aerospace & Space & Defense segment provides aero engines, rocket systems and space applications, and defense equipment systems. The Company also provides services for equipment and devices for communications, electronics, electrical measurement.