019 - Building materials (non-metallic); non-metallic rigid pipes for building; asphalt, pitch and bitumen; non-metallic transportable buildings; monuments, not of metal. - Building materials (non-metallic); non-metallic rigid pipes for building; asphalt, pitch and bitumen; non-metallic transportable buildings; monuments, not of metal.
037 - Building construction; repair; installation services. - Building construction; repair; installation services.
040 - Treatment of materials. - Treatment of materials.