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Expanded closed cell rubber for acoustic sound deadening; Rubber and non-metallic foam for use in sound absorption; Rubber and non-metallic foam for use in sound insulation; Insulating materials for insulation against sound; Materials for sound proofing, namely, rubber and non-metallic materials; Raw or semi-worked rubber for sound insulation; Sound absorbing materials, namely, expanded closed cell rubber; Rubber and non-metallic sound and vibration insulators and dampers; Rubber and non-metallic materials for acoustic insulation; Insulating polymeric materials for acoustic insulation; Laminates containing polyamide foams for acoustic insulation; Acoustic insulating panels made from non-metallic materials