| Classification of Products ver. 2002 (CZ-CPA) - level 4 - Group | 
                    452 | 
                    Works for complete construction or parts thereof; civil engineering work | 
                  
                
                  
                    | Classification of Products ver. 2002 (CZ-CPA) - level 6 - Category | 
                    45251 | 
                    Scaffolding work | 
                  
                
                  
                    | Classification of Products ver. 2002 (CZ-CPA) - level 6 - Category | 
                    45252 | 
                    Foundation work; water well drilling | 
                  
                
                  
                    | Classification of Products ver. 2002 (CZ-CPA) - level 6 - Category | 
                    45253 | 
                    Concrete work | 
                  
                
                  
                    | Classification of Products ver. 2002 (CZ-CPA) - level 6 - Category | 
                    45254 | 
                    Structural steel components erection work | 
                  
                
                  
                    | Classification of Products ver. 2002 (CZ-CPA) - level 6 - Category | 
                    45255 | 
                    Masonry and bricklaying work | 
                  
                
                  
                    | Classification of Products ver. 2002 (CZ-CPA) - level 6 - Category | 
                    45256 | 
                    Other special trade construction work |