Cement; Fired refractory materials, not of metal; Low-fired strength-fused silica stucco refractory casting mix; Refractory mortars

stones, synthetic stones, fireproof stones, as well as masses for use in the manufacture of fireproof coatings and cements

STONES, ARTIFICIAL STONES, REFRACTORY STONES, AS WELL AS MASSES FOR THE PRODUCTION OF FIREPROOF CASINGS, CEMENT