| 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 7 - Sub-category | 
                    452411 | 
                    General coastal and port construction work | 
                  
                
                  
                    | Classification of Products ver. 2002 (CZ-CPA) - level 7 - Sub-category | 
                    452412 | 
                    General construction work of dams, canals, irrigation channels and aqueducts | 
                  
                
                  
                    | Classification of Products ver. 2002 (CZ-CPA) - level 7 - Sub-category | 
                    452413 | 
                    General construction work of locks, floodgates and other hydro-mechanical structures | 
                  
                
                  
                    | Classification of Products ver. 2002 (CZ-CPA) - level 7 - Sub-category | 
                    452414 | 
                    Dredging work; other water-associated work |