Asphalting; Bricklaying; Building construction information; Building construction supervision; Building damp-proofing; Building of fair stalls and shops; Carpentry services; Cleaning of building exterior surfaces; Cleaning of building exterior surfaces; Cleaning of buildings; Construction consultancy; Demolition of buildings; Drilling of deep oil or gas-wells; Drilling of wells; Drilling of deep oil or gas-wells; Elevator installation and repair; Harbor construction; Installation of building insulation; Installation of doors and windows; Interference suppression services for electrical apparatus; Leasing of construction equipment; Masonry; Mining extraction; Painting, interior and exterior; Paper hanging; Pipeline construction and maintenance; Plastering; Road paving; Roofing services; Strong-room maintenance and repair; Swimming pool maintenance; Underwater construction; Underwater repair; Warehouse construction and repair