Building construction; public works, rural works (construction services); rental of construction tools and equipment; maintenance or cleaning of buildings, premises, floors; upkeep or cleaning of various objects; laundering; furniture, instrument and tool repair; drilling of wells; pier breakwater building; assembly of naval scaffolding [construction]; road paving; airplane maintenance and repair; burner maintenance and repair; rental of construction equipment; heating equipment installation and repair; air-conditioning apparatus installation and repair; construction consultation; construction; construction management [supervision]; construction information; demolition of buildings; scaffolding; cleaning of buildings [exterior surface]; installation and repair of electric apparatus; warehouse construction and repair; building sealing; mining extraction; drilling of deep oil or gas-wells; well drilling services on land and at sea; furnace installation and repair; fire alarm installation and repair; irrigation devices installation and repair; building insulating; rental of cranes [construction machinery]; rental of drainage pumps; installation, maintenance and repair of machinery; masonry; shipbuilding; street cleaning; pipeline construction and maintenance; harbour construction; installation and repair of refrigeration apparatus; repair information; rustproofing; underwater construction; underwater repair; factory construction; oil field services, namely, servicing of wellhead, fluid control and metering systems for land and subsea oil and gas drilling, production, refining and transportation.;
Geological prospecting, oils prospecting; services of engineers; professional consulting relating to computer software; engineering (not for building); scientific laboratory services; engineering for activities in industrial fields, assemblies, units and turnkey industrial facilities; engineering for renovation, repair and modernization of industrial complexes and units; engineering design applied to outfitting and tertiary equipment; petroleum engineering services; continental and underwater engineering; research and development of new processes and products for others; provision of technical studies of new processes and products for others; estimations in the field of engineering and exploitation of oil fields; searching for oil, gas and ore deposits in general; scientific and industrial research; construction drafting; oil-well testing; quality control; industrial design; consulting in the field of energy saving, measuring [calibration]; computer system analysis; water analysis; architecture; energy auditing; chemistry services; chemical research; chemical analysis; computer system design; conversion of data or documents from physical to electronic media; conversion of computer programs and data, other than physical conversion; surveying [engineering work]; underwater exploration; geological prospecting; geological surveys; geological research; analysis for oil-field exploitation; oil-field surveys; scientific information and consultancy in relation to carbon offsetting; scientific laboratory services; software design; updating of software; rental of computer software; computer software maintenance; installation of software; computer software consultancy; testing of materials; mechanical research; programming for computers; oil prospecting; physics research; technical project study; research in the field of environmental protection; bacteriological research; technical research; biological research; recovery of computer data; hosting of servers; information technology consultancy; technological consulting and engineering services in relation to petroleum metering systems; subsea engineering; engineering of wellhead, fluid control and metering systems for land and subsea oil and gas drilling, production, refining and transportation.;