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, > 50% Alumina, Silica Or A Mixture Or Compound Of These Products