7
Machines and machine tools for treatment of materials and for manufacturing; Coating machines; Galvanizing machines; Machines for processing metals; Metalworking machines; Nitriding installations; Nitriding machines; Plasma nitriding machines; Plasma nitriding installations; Plasma welding machines; Welding apparatus; Electric welding machines
9
Chemistry apparatus and instruments; Scientific and laboratory devices for treatment using electricity; Ionization apparatus not for the treatment of air or water
37
Machinery installation, maintenance and repair
40
Metal treating; Welding; Metal hardening; Surface treatments; Firing pottery; Ceramic processing; Coating by plasma nitriding; Heat treatment of metals; Heat treatment, Coating and plasma nitriding of steel, metal, metal alloys and ceramics (treatment of materials)
42
Engineering design and consultancy; Metallurgical analysis; Chemical analysis; Technological analysis services; Research relating to technology; Chemical research and analysis services; Research and development in the field of physics, chemistry and technology; Research and development relating to the treatment of materials; Development of coatings for metals; Development of coatings for non-metals