Section 13 Articles of stone, plaster,cement,asbestos, mica or similar materials; ceramic products; glass and glassware 70 Glass and glassware 70 11 Glass envelopes (including bulbs and tubes), open, and glass parts thereof, without fittings, for electric lamps, cathode ray tubes or the like 70 11 20 - For cathode-ray tubes Commodity Code Description 70 11 20 00 - For cathode-ray tubes
