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