construction; building construction supervision; construction of buildings; repair services; construction consultation; housing construction; pipeline construction; building construction consultancy; building construction; factory construction; supervision of building construction; building project management; pipeline construction and maintenance; civil engineering construction; building maintenance; repair of buildings; building project management (building construction supervision); underground construction; civil construction services; marine construction; building and construction of real estate subdivisions and developments; building repairs; advisory services relating to building construction materials; renovation of buildings; harbour construction; housing development (building and construction services); building and construction services; road construction; building construction advisory services; supervision of construction; supervision of construction projects; underwater construction; property development (building and construction services); maintenance of buildings