Non-metal building materials, namely, boards, panels, and slabs; Non-metal construction materials, namely, boards, panels, and slabs; Non-metal fire-resistant boards and panels for construction; Building materials, namely, fire and blast-resistant doors comprised primarily of reinforced cement and also including steel elements; Portable non-metal buildings; Portable huts, not of metal; Non-metal shelter structures, other than tents; Building materials, namely, composite panels composed primar...