Non-metallic building materials, namely, door and wall panels; damp proof membranes of synthetic plastics materials for roofing, floors, and walls; waterproof roofing membranes; fabrics for use in civil engineering; anti-erosion fabric, mats and coverings, not of metal being geotextiles; geotextile fabric materials, not of metal, for protecting dams, canals, swimming pools, hydraulic pipes, tunnels and waterways from erosion; geotextile fabric materials, not of metal, for waterproofing dams, ...