19 Building materials of glass namely, plate glass for building windows; floor boards of glass for building; plastic building boards for walls with plastic racks; spackling compound being fillers of acrylic resin for repairing walls and floors; acrylic tiles; polycarbonate resin building materials, namely, polycarbonate resin building materials for wall-finishing material; ceramic building materials, bricks and refractory products, namely, ceramic building materials, bricks and refractory products for wall-finishing material; plastic building materials, namely, plastic panels for wall-finishing material; synthetic boards being plastic for building purposes; synthetic building materials, namely, plastic boards for wall-finishing material and wall structural material; rubber building or construction materials, namely, rubber boards for wall-finishing material; plaster for building purposes; lime building or construction materials; building or construction materials of plaster, namely, plaster boards for wall-finishing material; buildings panels, not of metal; wood-fiber reinforced cement boards being cement excelsior boards; cement and products thereof namely, wood cement boards; wooden building materials, namely, wooden boards for wall-finishing material; ceiling boards, not of metal; floor boards, not of metal; building timber; building stone; joinery fittings, not of metal; reinforcing materials, not of metal, for building