Code 6903 20

OTHER REFRACTORY CERAMIC GOODS, CONTAINING BY WEIGHT MORE THAN 50 % OF ALUMINA (AL2O3) OR OF A MIXTURE OR COMPOUND OF ALUMINA AND OF SILICA (SIO2)

SECTION XIII. Articles of stone, plaster, cement, asbestos, mica or similar materials; ceramic products; glass and glassware

69 CERAMIC PRODUCTS

I. GOODS OF SILICEOUS FOSSIL MEALS OR OF SIMILAR SILICEOUS EARTHS, AND REFRACTORY GOODS

6903 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:

6903 20 containing by weight more than 50 % of alumina (Al2O3) or of a mixture or compound of alumina and of silica (SiO2):

6903 20 100 0 containing by weight less than 45% of alumina (Al2O3)

6903 20 900 0 containing by weight 45% or more of alumina (Al2O3)