37 Construction, installation and repair services of floating and non-floating drilling rigs, vessels, engineering vessels, drilling platforms, jacket platforms, cruise ships, cranes, quayside container cranes, ships' derricks, barges, portal cranes, floating production, storage and offloading modules, wellhead platforms, platform modules, floating cranes, multi-purpose tug vessels, geophysical survey vessels, coast guard vessels, synthetical measuring ship, jacket launching barges, coupling gantry cranes, rail mounted gantry cranes, bucket-wheel reclaimers, harbor loading and unloading machine; building construction supervision; construction information; repair information relating to oil drilling, exploration and extraction; ship repair information; construction of infra-structure, energy facilities and real estate; installation and repair of furnaces; factory construction; pipeline construction and maintenance; port construction; steel construction, namely, steel structure construction works; building maintenance and repair; dredging services; road construction and paving; heating equipment installation and repair; machinery installation, maintenance and repair; shipbuilding; drilling of oil wells and gas wells; hydraulic fracturing services; oil drilling; natural gas drilling; vehicle maintenance services; repair of vehicle services; drilling of wells; rust prevention services, namely, rustproofing; interior and exterior painting; chemical processing onto machines, namely, rustproofing; equipment repair and maintenance, namely, repair of ships and machines of infra-structure, energy and real estate project;installation for oil production, namely, installation of machines of infra-structure, energy and real estate project