Acoustic sheets (other than for insulation); Building materials, not of metal; Interior decorative panels made of non-metallic materials; Non-metallic decorative panelling; Panelling of non-metallic materials for use in construction; Acoustic building materials (other than for insulation); Acoustic panels (other than for insulation); Acoustic screens (other than for insulation); Acoustic tiles (other than for insulation); Non-metallic building materials having acoustic properties; Felt for building