6
Common metals and their alloys; Building materials of metal; Processed common metals and their alloys, recycled common metals and their alloys; Processed building materials, Recycled building materials, industrial by-products being building materials, Alternative building materials, Building materials for roads, paths, houses and hydraulic engineering, including the following products: Aggregates and filling materials, all the aforesaid goods being of metal or predominantly of metal
19
Building and construction materials and elements made of sand, stone, rock, clay, minerals and concrete; Building materials, not of metal; Processed building materials, processed flooring materials in the form of building materials, Recycled building materials, industrial byproducts as building materials, Alternative building materials, Building materials for roads, paths, houses and hydraulic engineering, including the following products: Aggregates and filling materials, Blocks of concrete; None of the aforesaid goods being of metal or predominantly of metal
42
Scientific and technological services and research and design relating thereto; Industrial analysis and research services; Engineering services; Engineering services; Engineering consultancy services; Technical engineering; Industrial testing; Testing, authentication and quality control; Component testing; Civil engineering planning services; Quality control of building materials, Technical consultancy services relating to civil engineering; Technological research for the building construction industry; Analysis of the structural behaviour of building materials