6
Common metals and their alloys; Common metals and their alloys including stainless steel; Metallic building materials; Steel building materials; Metal building materials; Metal materials for building; Building materials of metal; Pipes of metal; Bend pipes of metal; Drill pipes of metal; Gutter pipes of metal; Drainage pipes of metal; Drain pipes of metal; Paving blocks of metal; Bolts of metal; Screw bolts of metal; Expansion bolts of metal
19
Glass building materials; Strawboard [building materials]; Intumescent building materials; Concrete building materials; Lime building materials; Building materials (non-metallic); Coatings [building materials]; Building materials of wood; Non-metallic building materials; Building materials of glass; Paving blocks; Concrete paving blocks; Non-metallic paving blocks; Rigid pipes, not of metal; Plastics pipes [rigid] for water; Rigid pipes, not of metal [building]; Non-metallic rigid pipes for building; Rigid underdrainage pipes, not of metal; Rigid pipes, not of metal, for building; Rigid pipes of plastics [other than parts of sanitary installations]; Concrete; Limestone; Cement; Cement pipes; Metallic cement; Slabs (Cement -); Cement slabs; Filling cement; Refractory cement; Roofing cement; Refractory mortar; Refractory bricks; Refractory concrete; Clinker stone; Bricks; Fireproof bricks; Facings, not of metal, for building; Glass (Building -); Gravel; Macadam; Paper board for building; Drywall
37
Concrete repairs; Construction of buildings; Custom construction of buildings; Building maintenance and repair; Construction information; Providing construction information; Construction information services; Provision of construction information; Building construction supervision; Supervision (Building construction -); Supervision of building construction; Consultation in building construction supervision; Building construction supervision services for building projects; Building construction supervision services for real estate projects; Building construction services; Building construction; Building construction consultancy; General building construction services; Building construction advisory services; Building construction and repair
42
Development of construction projects; Engineering consultancy; Civil engineering consultancy; Engineering consultancy services