Manufacture of concrete products for construction purposes

Title: Manufacture of concrete products for construction It includes the manufacture of concrete products, artificial stone (marble), cement (tiles, bricks, tiles, slabs, sheets, panels, ducts, posts, etc.) and prefabricated structures and structural components for construction or civil engineering works and traffic control, cement, concrete or artificial stone; prefabricated elements to be used in landscaping, walls containment and management of wastewater and rainwater, prefabricated concrete water pipes drinkable. Includes the manufacture of calcium silicate masonry parts and autoclaved cellular concrete. Does not include:  Manufacture of refractory cements (23200);  Manufacture of other concrete, cement and plaster articles not intended for construction (23660);