| Classification of Products ver. 2002 (CZ-CPA) - level 3 - Division | 
                    45 | 
                    Construction work | 
                  
                
                  
                    | Classification of Products ver. 2002 (CZ-CPA) - level 5 - Class | 
                    4521 | 
                    General construction work for buildings and civil engineering work | 
                  
                
                  
                    | Classification of Products ver. 2002 (CZ-CPA) - level 5 - Class | 
                    4522 | 
                    Erection work of roof covering and frames | 
                  
                
                  
                    | 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 5 - Class | 
                    4524 | 
                    General construction work for water projects | 
                  
                
                  
                    | Classification of Products ver. 2002 (CZ-CPA) - level 5 - Class | 
                    4525 | 
                    Other construction work involving special trades |