Non-metallic building materials, namely, non-metallic rubber spacers and polymeric building materials in the form of a bar, for achieving certain distance between two sheets of glass used in construction; building materials, not of metal, for windows, doors and facades, namely, non-metallic rubber spacers and polymeric building materials in the form of a bar, for achieving certain distance between two sheets of glass used in construction; non-metallic reinforcements, namely, spacers for use i...