Building materials of expanded polystyrene; Building materials of expanded polystyrene in block form; Building materials of expanded polystyrene in sheet form; Building materials of expanded polystyrene in slab form; Flame retardant building materials; Non-metallic building materials for floors; Non-metallic building materials in the form of beams; Non-metallic building materials in the form of slabs; Pre-formed insulation components (non-metallic building materials)