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 OR OF CHAPTER 69. Commodity Code Description 68 06 10 SLAG WOOL, ROCK WOOL & SIMILAR MINERAL WOOLS (INCLUDING INTERMIXTURES.)... 68 06 20 EXFOLIATED VERMICULITE, EXPANDED CLAYS, FOAMED SLAG & SIMILAR EXPANDED.... 68 06 90 OTHER MIXTURES & ARTICLES OF HEAT-INSULATING/SOUND-INSULATING/SOUND-......