Malaysia Marine and Heavy Engineering Holdings Berhad, an investment holding company, engages in the provision of marine and heavy engineering solutions for offshore and onshore facilities, and vessels in Malaysia. It operates through Heavy Engineering, Marine, and Plant Turnaround & Shutdown Maintenance segments. The company offers fabrication, engineering, procurement, construction, installation, and commissioning services for offshore and onshore facilities, including deepwater facilities, fixed platforms, turrets, pre-assembled unit and rack modules, offshore wind facilities, hydrogen and ammonia production facilities, and carbon capture and storage facilities; and provides conversion services for floating production storage and offloading, floating storage and offloading, floating storage units, and mobile offshore production units. It is also involved in the provision of marine repair and life extension solutions for various types of vessels, rigs, and marine facilities; maritime decarbonization retrofitting services; plant turnaround and shutdown maintenance, plant improvement, static equipment, valve repair and overhaul, and electrical and instrument work services; and light engineering services for steel structures and grid line towers. The company was formerly known as MSE Holdings Berhad and changed its name to Malaysia Marine and Heavy Engineering Holdings Berhad in June 2010. The company was incorporated in 1989 and is based in Kuala Lumpur, Malaysia. Malaysia Marine and Heavy Engineering Holdings Berhad operates as a subsidiary of MISC Berhad.