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Customs Tariff Number 690220 - Search results (4)
Refractory bricks, blocks, tiles and similar refractory ceramic constructional goods containing, by weight, > 50% alumina, silica or a mixture or compound of these products (excl. those of siliceous fossil meals or similar siliceous earths)
Refractory bricks, blocks, tiles and similar refractory ceramic constructional goods containing, by weight, >= 93% silica (excl. those of siliceous fossil meals or similar siliceous earths)
Refractory bricks, blocks, tiles and similar refractory ceramic constructional goods containing, by weight, > 7% but < 45% alumina, but > 50% by weight combined with silica
Refractory bricks, blocks, tiles and similar refractory ceramic constructional goods containing, by weight, > 50% alumina, silica or a mixture or compound of these products (excl. containing, by weight, >= 93% silica, > 7% but < 45% alumina and those of siliceous fossil meals or similar siliceous earths)