Ceramic refractory masses for lining metallurgical furnaces; Ceramic refractory work pieces; Firebricks (refractory materials); Fireclay (refractory materials); Grog (fired refractory material); Natural refractory materials for forming linings in high temperature vessels; Natural refractory materials for repairing linings in high temperature vessels; Refractory aggregates; Refractory blocks for use as furnace linings; Refractory ceramic masses; Refractory ceramic masses for covering metallurgical melts; Refractory ceramic masses for lining channels; Refractory ceramic masses for lining furnaces; Refractory ceramic masses for lining vessels; Refractory concrete; Refractory construction materials, not of metal; Refractory masses for the manufacture of fire proof linings; Refractory material used in casting; Refractory materials for use in kiln furniture; Refractory materials having thermally insulating coatings; Refractory products in the form of concrete; Refractory products in the form of linings; Refractory products in the form of masses; Refractory products in the form of mixes; Refractory products in the form of prefabricated structural elements; Shrouds of refractory material; Underclay for refractory use; Bricks being refractory articles; Refractory bricks; Refractory products in the form of bricks; Bricks; Moulded clay bricks; Refractory cement; Refractory products in the form of cement; Cement; Cement blocks; Cement for furnaces; Cement for blast furnaces; Fibre cement; Fire cements; Magnesia cement; Fireproof bricks; Fireproof cement coatings; Fireproof cementitious products; Fireproof clays; Refractory mortar; Refractory products in the form of mortar; Constructional components of reinforced cement mortar; Levelling preparations (cement or mortar); Mortar; Filling materials for bottom tap holes of electric furnaces; Filling materials for casting ladles; Precast concrete building elements; Precast concrete floor elements