71.12.B - Other activities in the field of engineering and related technical consulting
37.00.Z - Sewerage
42.21.Z - Construction of utility projects for fluids
42.99.Z - Construction of other civil engineering projects n.e.c.
43.12.Z - Site preparation
43.22.Z - Plumbing, heat and air-conditioning installation
43.23.Z - Installation of insulation
43.50.Z - Specialised construction activities in civil engineering
43.99.Z - Other specialised construction activities n.e.c.
68.12.C - Execution of other construction projects
71.20.B - Inspection and issuance of opinions on the technical condition of chimneys and ventilation ducts
71.20.C - Other technical research and analyses