| 8540.11 | 000 | Colour |
| 8540.12 | 000 | Monochrome |
| 8540.20 | 000 | Television camera tubes; image converters and intensifiers; other photo-cathode tubes |
| 8540.40 | 000 | Data/graphic display tubes, monochrome; data/graphic display tubes, colour, with a phosphor dot screen pitch smaller than 0.4 mm |
| 8540.60 | 000 | Other cathode-ray tubes |
| 8540.60 | | Microwave tubes (for example, magnetrons, klystrons, travelling wave tubes, carcinotrons), excluding grid-controlled tubes |
| 8540.71 | 000 | Magnetrons |
| 8540.79 | 000 | Other |
| 8540.79 | | Other valves and tubes |
| 8540.81 | 000 | Receiver or amplifier valves and tubes |
| 8540.89 | 000 | Other |
| 8540.89 | | Parts |
| 8540.91 | 000 | Of cathode-ray tubes |
| 8540.99 | 000 | Other |
