METASTAR

clays for use in bulding and construction materials; calcined clays for use in building and construction materials; processed clay minerals for use in building and construction materials; chemicals for use as cement preservatives and waterproofing preparations; chemicals for the reduction and/or prevention of efflorescence and degradation of concretes and cements; and calcined clays for use as additives in concrete compositions

non-metallic building materials, namely, concretes, cements, and cement coatings