Non-metallic external doors; non-metallic folding doors; fireproof doors, not of metal; industrial doors, non-metallic; non-metal building materials, namely, heat-resistant wall panels, not of metal; non-metal building materials, namely, external non-metal doors; non-metal construction materials, namely, non-metal folding doors; non-metal building materials, namely, non-metal fire doors; non-metal building materials, namely, doors for industrial use, mainly of non-metallic building materials