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 f Commodity Code Description 70 11 10 Open glass envelopes (incl. bulbs and tubes), for electric lighting 70 11 20 For cathode-ray tubes 70 11 90 Other
