19 Building materials, namely, flooring panels composed primarily of nonmetal materials; Construction materials in the nature of non-metal composite panels; Engineered flooring not made of metal; Construction materials, namely, non-metal materials for constructing floors; Non-metal wood substitutes used as building materials; Non-metal building materials, namely, flooring made of wood, stone, plastic, or tile; Construction materials, namely, connections for floor boards and flooring materials