Harmonized System
Section XVI > Chapter 85 > Heading 8539 > 8539.5 > 8539.52
Light-emitting diode (LED) lamps
Section XVI > Chapter 85 > Heading 8540
Thermionic, cold cathode or photo-cathode valves and tubes (for example, vacuum or vapour or gas filled valves and tubes, mercury arc rectifying valves and tubes, cathode-ray tubes, television camera tubes).
Section XVI > Chapter 85 > Heading 8540 > 8540.1
Cathode-ray television picture tubes, including video monitor cathode-ray tubes
Section XVI > Chapter 85 > Heading 8540 > 8540.7
Microwave tubes (for example, magnetrons, klystrons, travelling wave tubes, carcinotrons), excluding grid-controlled tubes
Section XVI > Chapter 85 > Heading 8540 > 8540.8
Other valves and tubes
Section XVI > Chapter 85 > Heading 8540 > 8540.20
Television camera tubes; image converters and intensifiers; other photo-cathode tubes