Articles of cement for building purposes; articles of cement for construction purposes; cement; cement-based materials; pitch and bitumen; bituminous products for building; bituminous products for use in construction; concrete products for use in building; concrete products for use in roadways; concrete products for use in walkways; non-metallic articles for use in building; non-metallic articles for use in construction; non-metallic building components; non-metallic building elements; non-metallic building materials; non-metallic building products; non-metallic rigid pipes for building; non-metallic rigid pipes for construction purposes; polymer concrete; polymeric building panels; solid polymer and mineral combination building panels