Drain pipes, not of metal; Staircases, not of metal; Slates for wall cladding; Building materials, namely, manufactured non-metal material, cement veneer for use on floors; Palings, not of metal; Insect screens, not of metal; Transportable buildings, not of metal; Fiberboards; Fire resisting wood; Fireproof tiles; Ceramic tiles; Construction timber; Wooden doors; PVC railings; Non-metal ventilating ducts