Sustained Infrastructure Holding Company, together with its subsidiaries, engages in the development and management of port and terminal operations primarily in the Kingdom of Saudi Arabia. The company operates through three segments: Port Development and Operations; Logistic Parks and Support Services; and Water Desalination and Distribution. It manages and operates storage and re-export project located on the land leased from Jeddah Islamic port; and develops, constructs, operates, and maintains container terminals, and excavation and back filling works. The company is also involved in the water desalination and treatment plant activities, as well as the sale of water. In addition, it develops and operates industrial zones; constructs and operates restaurants, and catering and entertainment centers; constructs gas stations, and auto servicing and maintenance workshops; and purchases, sells, leases, and invests in land for the construction of buildings; offers maritime, logistics, and warehouse services; and supply chain solutions. The company was incorporated in 1988 and is headquartered in Jeddah, the Kingdom of Saudi Arabia.