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 11 Articles of asbestos-cement, of cellulose fibre-cement or the like 68 11 81 Corrugated sheets 68 11 81 00 Corrugated sheets Commodity Code Description 68 11 81 00 000 Corrugated sheets