| Classification of Products (CZ-CPA_2025) - level 5 - Category | 
                    26111 | 
                    Thermionic, cold cathode or photo-cathode valves and tubes | 
                  
                
                  
                    | Combined nomenclature 8 digits | 
                    85407100 | 
                    Magnetrons | 
                  
                
                  
                    | Combined nomenclature 8 digits | 
                    85407900 | 
                    Microwave tubes, e.g. travelling wave tubes and carcinotrons (excl. magnetrons and grid-controlled tubes) | 
                  
                
                  
                    | Combined nomenclature 8 digits | 
                    85408100 | 
                    Receiver or amplifier valves and tubes (excl. microwave tubes, photo-cathode tubes and cathode ray tubes) | 
                  
                
                  
                    | Combined nomenclature 8 digits | 
                    85408900 | 
                    Electronic valves and tubes (excl. receiver or amplifier valves and tubes, microwave tubes, photo-cathode tubes, cathode ray tubes, black and white or other monochrome data-graphic display tubes and colour data-graphic display tubes with a phosphor dot screen pitch of < 0,4 mm) |