产品描述
REFRACTORY BRICKS, BLOCKS, TILES AND SIMILAR REFRACTORY CERAMIC CONSTRUCTIONAL GOODS, OTHER THAN THOSE OF SILICEOUS FOSSIL MEALS OR SIMILAR SILICEOUS EARTHS - WITH AN ALUMINA CONTENT (ALO3), OF SILICA (SIO2) OR A MIXTURE OR COMBINATION OF THESE PRODUCTS, GREATER THAN 50% IN WEIGHT