Section XVI — Machinery and mechanical appliances; electrical equipment; parts thereof; sound recorders and reproducers, television image and sound recorders and reproducers, and parts and accessories of such articles
Heading
8540
Thermionic, cold cathode or photocathode 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).
Common commodities
Vacuum diode tubesPentode audio amplifier tubesTriode power output tubesMercury rectifier valve tubesCathode-ray oscilloscope tubesTelevision picture CRT tubesElectron tube for microwave generationKlystron vacuum tube amplifierMagnetron microwave oven tubesVacuum phototube for light detection