… Glass envelopes (including bulbs and tubes), open, and glass parts thereof, …
Explanatory notes
… 70.11 - Glass envelopes (including bulbs and tubes), open, and glass parts thereof, … of electric lamps, valves and tubes, whether these are for illuminating or other purposes (incandescent or vapour … may be frosted, coloured, opal, metallised, coated with fluorescent material, etc. Glass parts of envelopes …