IHI Corp. engages in the design, manufacture, sale, installation, repair, overhaul, and maintenance of heavy machinery. It operates through the following segments: Resources, Energy & Environment; Social Infrastructure & Offshore Facilities; Industrial Systems & General-Purpose Machinery; Aero Engine, Space & Defense; and Others. The Resources, Energy & Environment segment includes boilers, power systems, motors for land and marine use, gas processes for storage facilities & chemical plants, nuclear power, gas engines, environmental systems, and pharmaceutical plants. The Social Infrastructure & Offshore Facilities segment deals with bridges, water gates, steel structures, shield tunneling machines, transportation systems, urban development, and security services. The Industrial Systems & General-Purpose Machinery segment offers rotating machinery, logistic systems, materials handling equipment, parking systems, steel manufacturing equipment, industrial machinery, heat & surface treatm