Section 13 Articles of stone, plaster, cement, asbestos, mica or similar materials; ceramic products; glass and glassware 68 Articles of stone, plaster, cement, asbestos, mica or similar materials 68 06 Slag wool, rock wool and similar mineral wools; exfoliated vermiculite, expanded clays, foamed slag and similar expanded mineral materials; mixtures and articles of heat-insulating, sound-insulating or sound-absorbing mineral materials, other than those o Commodity Code Description 68 06 10 Slag wool, rock wool, etc (incl. intermixtures) in bulk, sheets or rolls 68 06 20 Exfoliated vermiculite, expanded clays, etc (incl. intermixtures) 68 06 90 Other