Ceramic products bricks, slabs, tiles and similar ceramic pieces of construction, refractory, except those of fossil siliceous flour or analogous siliceous earths.- with an alumina (al2o3), silica (sio2) content or a mixture or combination of these products, over 50% by weight: other
Ceramic products bricks, slabs, tiles and similar ceramic pieces of construction, refractory, except those of fossil siliceous flour or analogous siliceous earths.- with an alumina (al2o3), silica (sio2) content or a mixture or combination of these products, over 50% by weight: other
Ceramic products bricks, slabs, tiles and similar ceramic pieces of construction, refractory, except those of fossil siliceous flour or analogous siliceous earths.- with an alumina (al2o3), silica (sio2) content or a mixture or combination of these products, over 50% by weight: other