Eni Gas & Power[159] (100% owned) – a natural gas and power company based in Belgium formed by merger of Distrigas and Nuon Belgium Versalis (100% owned) – Versalis is a chemical company that manages the production and marketing of petrochemical products such as olefines, aromatics and intermediates (base chemicals), styrenes, elastomers and polyethylene, plus in recent years a focus on green chemistry, being also able to count on a range of proprietary technologies, advanced plant facilities and a broad-based distribution network.[160] Saipem (30.54% owned) – Saipem is an oil and gas industry contractor. Saipem has contracted for engineering, oilfield services and construction both offshore and onshore through several pipelines, including Blue Stream, Greenstream, Nord Stream and South Stream.