Construction work for bridges and tunnels, shafts and subways

Construction work for engineering works except bridges, tunnels, shafts and subways

Structures construction work

Construction, foundation and surface works for highways, roads

Construction work for railways and cable transport systems

Construction work for dams, canals, irrigation channels and aqueducts

Electrical wiring and fitting work

Lift and escalator installation work

Installation of telecommunications equipment

Other electrical installation work

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