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 05 NATURAL OR ARTIFICIAL ABRASIVE POWDER OR GRAIN ON A BASE OF PAPER, ETC Commodity Code Description 68 05 10 On a base of woven textile fabric only 68 05 20 On a base of paper or paperboard only 68 05 30 On a base of other materials