Section 13 Articles of stone, plaster,cement,asbestos, mica or similar materials; ceramic products; glass and glassware 70 Glass and glassware 70 02 Glass in balls, rods or tubes, unworked 70 02 39 Tubes of glass, unworked, nes Commodity Code Description 70 02 39 00 Tubes of glass, unworked, nes 70 02 39 10 Of a kind used to manufacture vacuum tubes 70 02 39 20 Other, of clear neutral borosilicate glass, with a diameter of 3 mm or more but not m 70 02 39 90 Other
