71.12.Z - Engineering activities and related technical consultancy
08.11.Z - Quarrying of ornamental and building stone, limestone, gypsum, chalk and slate
08.12.Z - Operation of gravel and sand pits; mining of clays and kaolin
08.91.Z - Mining of minerals for chemical industry and for production of fertilizers
08.99.Z - Other mining and quarrying not elsewhere classified
43.13.Z - Test drilling and boring
68.31.Z - Real estate agencies
70.22.Z - Business and other management consultancy activities
74.10.Z - Specialised design activities
74.90.Z - Other professional, scientific and technical activities not elsewhere classified