Asphalt, pitch and bitumen; concrete sleepers, namely, concrete sleepers for tracks and points; concrete building materials, namely, blocks, bricks, posts, slabs and panels; railway sleepers, not of metal, posts, not of metal, namely, posts for power lines; rigid pipes, not of metal for building; posts, not of metal; cement slabs; non-luminous and non-mechanical signs not of metal; non-metallic transportable buildings

Building construction; building and construction of rail-track systems, namely, ballasted track systems and ballastless track systems on concrete and asphalt covers; installation services, namely, installation of rail tracks and track systems; machinery installation, maintenance and repair; repair of tracks and railways