Non-metallic building materials, namely, wall, cladding, large format flooring and cladding facades, decking, boards and plates of porcelain prepared with natural and ecological raw materials for coating facades, buildings, roofs, walls and floors; prefabricated boards of ceramic and porcelain for coating, and building construction; paving coatings of ceramic sold as an integral component of sandstone, porcelain, natural or artificial stone and wood; tiles of ceramic; tiles of natural or arti...