Privately-held global holding company of Sultan Bin Khalifa Bin Zayed Al Nahayan; businesses: oil & gas, petrochemicals, power generation, steel manufacturing, food, hotels, malls, private equity, banking, real estate, aviation etc; based in Dubai

Abu Dhabi-based joint venture between the Bin Hamoodah Group and the Weir Group of Scotland; engaged in the overhaul and repair of all electro-mechanical equipment; valve refurbishment; wellhead equipment; rotating equipment etc

Providers of a full range of engineering, design, procurement & construction services for major onshore oil & gas, refining & petrochemical projects; joint venture between Mudabala Petroleum & Petrofac International

Branch of the world's eleventh largest multinational engineering & design consultancy, serving clients in the Middle East & India; offices: Abu Dhabi, Al Ain, Dubai, Sharjah, Manama, Kuwait City, Muscat, Doha, Riyadh, Jeddah, & Bangalore

Leading general contractor providing technical, management, & financial services for generation, transmission, & distribution of electricity; builds power plants, & offers general industrial & urban construction services; based in Dubai & Fujairah

Firm involved in tunnelling & underground construction, horizontal directional drilling (HDD), water & waste management, earthworks, garbage chute, power, oil & petroleum, equipment hire, & food sectors in GCC & India; subsidiary of ETA-Star Group

Manufacturing & engineering company in Sharjah, involved in trading, portable & modular building fabrication, boat building, waste water treatment, glass reinforced plastics (GRP) etc; a fully-owned subsidiary of Bukhatir Group

Engineering firm in Dubai engaged in security management, site preparation, backup power protection, structured cabling, low current systems, traffic barriers and gate automation, third party maintenance services etc; part of Bahrain-based Al Moayyed

One of the largest business houses in the UAE, involved in construction, manufacturing, IT, shopping malls, education, engineering services, real estate development, sports, & TV media; based in North America, north Africa, & west & south Asia

Engineering & contracting group constructing offshore platforms, engineering pressure vessels & process columns, managing EPC projects, providing H2S consultancy services etc to the oil, gas, & energy sector; listed on Oslo Stock Exchange