17 Acoustic insulating boards for buildings; sound insulating ceiling panels and partitions including decorative panels; acoustic insulating panels, tiles, screens and boards; acoustic insulating materials, including insulating fabrics, plastics and felts; non-metallic sound-insulating materials; materials for acoustic insulation; sound absorbing materials; sound absorbing wall and ceiling coverings; fabrics for acoustic insulation; non-metallic sound-insulating products made from recycled waste materials.