| Classification of Products ver. 2002 (CZ-CPA) - level 5 - Class | 
                    4523 | 
                    General construction work for motorways, roads, airfields and sport facilities | 
                  
                
                  
                    | Classification of Products ver. 2002 (CZ-CPA) - level 7 - Sub-category | 
                    452311 | 
                    General foundation work for motorways, roads, streets and other vehicular or pedestrian ways | 
                  
                
                  
                    | Classification of Products ver. 2002 (CZ-CPA) - level 7 - Sub-category | 
                    452312 | 
                    General surface work for motorways, roads, streets and other vehicular or pedestrian ways | 
                  
                
                  
                    | Classification of Products ver. 2002 (CZ-CPA) - level 7 - Sub-category | 
                    452313 | 
                    General construction work for railways | 
                  
                
                  
                    | Classification of Products ver. 2002 (CZ-CPA) - level 7 - Sub-category | 
                    452314 | 
                    General construction work for airfield runways | 
                  
                
                  
                    | Classification of Products ver. 2002 (CZ-CPA) - level 7 - Sub-category | 
                    452315 | 
                    Painting work of markings on roads surfaces, parking lots and similar surfaces |