| Classification of Products ver. 2002 (CZ-CPA) - level 4 - Group | 
                    111 | 
                    Crude petroleum and natural gas | 
                  
                
                  
                    | Classification of Products ver. 2002 (CZ-CPA) - level 6 - Category | 
                    11101 | 
                    Petroleum oils and oils obtained from bituminous minerals, crude | 
                  
                
                  
                    | Classification of Products ver. 2002 (CZ-CPA) - level 6 - Category | 
                    11102 | 
                    Natural gas, liquefied or in gaseous state | 
                  
                
                  
                    | Classification of Products ver. 2002 (CZ-CPA) - level 6 - Category | 
                    11103 | 
                    Liquefaction and regasification services of natural gas for transportation | 
                  
                
                  
                    | Classification of Products ver. 2002 (CZ-CPA) - level 6 - Category | 
                    11104 | 
                    Bituminous or oil shale and tar sands |