Section 13 ARTICLES OF STONE, PLASTER, CEMENT, ASBESTOS, MICA OR SIMILAR MATERIAL S; CERAMIC PRODUCTS; GLASS AND GLASSWARE 68 Articles of stone, plaster, cement, asbestos, mica or similar materials 68 15 Articles of stone or of other mineral substances (including carbon fibres, artic Commodity Code Description 68 15 10 68 15 11 Carbon fibres 68 15 12 Fabrics of carbon fibres 68 15 13 Other articles of carbon fibres 68 15 19 Other 68 15 20 68 15 91 68 15 99