Non-metallic building materials, namely, wall tiles, pavement tiles, and non-metal decorative tiles for use on interior and exterior walls; porcelain stoneware, namely, wall coverings in the nature of wall tiles, border tiles, skirtings, corner caps, namely, corner tiles for decoration, step tiles, handrail tiles for staircases and balconies, channel tiles; swimming pool decking, namely, paving tiles; pavement pieces for swimming pool perimeters, namely, pavement tiles