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 textile material, of paper, of paperboard or of other materials, whether or not cut to shape or sewn or otherwise made up 68 05 30 - On a base of other materials Commodity Code Description 68 05 30 00 - On a base of other materials