71.12.B - Other activities in the field of engineering and related technical consulting
                                    
                                            
                                        42.21.Z - Construction of utility projects for fluids
                                    
                                            
                                        42.91.Z - Construction of water projects
                                    
                                            
                                        42.99.Z - Construction of other civil engineering projects n.e.c.
                                    
                                            
                                        43.11.Z - Demolition
                                    
                                            
                                        43.12.Z - Site preparation
                                    
                                            
                                        43.22.Z - Plumbing, heat and air-conditioning installation
                                    
                                            
                                        43.24.Z - Other construction installation
                                    
                                            
                                        43.35.Z - Other building completion and finishing
                                    
                                            
                                        43.42.Z - Other specialised construction activities in construction of buildings
                                    
                                            
                                        43.50.Z - Specialised construction activities in civil engineering
                                    
                                            
                                        43.91.Z - Masonry and bricklaying activities
                                    
                                            
                                        43.99.Z - Other specialised construction activities n.e.c.