Classification Information

Asphalt; Bitumen; Cement; Concrete; Gravel; Gypsum for use as building materials; Marble; Monuments of stone, concrete or marble; Natural stone; Non-metal tiles for walls, floors or ceilings; Plaster; Reinforcing materials not of metal for building purposes; Sand; Slabs, not of metal, for building; Statues of stone, concrete or marble; Stones

Nonmetallic Building Materials