[ Non-metallic building materials, namely, concrete blocks, concrete blocks incorporating a rail fastening system and railway supports; rigid pipes, not of metal, for building; asphalt, pitch and bitumen; transportable buildings, not of metal; monuments, not of metal, concrete building elements, namely, concrete blocks, concrete blocks incorporating a rail fastening system and railway supports, non-metal shuttering for concrete, namely, casting forms, railway sleepers of wood, gravel, cement,...