IHI Corporation , formerly known as Ishikawajima-Harima Heavy Industries Co., Ltd. is a Japanese engineering corporation headquartered in Tokyo, Japan that produces and offers ships, space launch vehicles, aircraft engines, marine diesel engines, gas turbines, gas engines, railway systems, turbochargers for automobiles, plant engineering, industrial machinery, power station boilers and other facilities, suspension bridges and other structures.

JFE Holdings, Inc. is a corporation headquartered in Tokyo, Japan. It was formed in 2002 by the merger of NKK and Kawasaki Steel Corporation and owns JFE Steel, JFE Engineering and Japan Marine United. JFE is from Japan, Fe and Engineering. In 2020, it was ranked 365th in Fortune Global 500 List.