Section 13 Articles of stone, plaster, cement, asbestos, mica or similar materials; ceramic products; glass and glassware 69 Ceramic products 69 03 Other refractory ceramic goods (for example, retorts, crucibles, muffles, nozzles, plugs, supports, cupels, tubes, pipes, sheaths and rods), other than those of siliceous fossil meals or of similar siliceous earths. 69 03 90 Other Commodity Code Description 69 03 90 00 Other
