Sound-proof sheet (mix two layers of phenol foam and ceramic and two outer layers are poly-thylene foam) - sound absorbing material, size (300 x 600 x38 mm), brand new
Eq120t soundproof wall panels, stone fiber material (with 3 different porous layers wrapped in airtight frame) for show room sound , kt: 2400 * 600 * 120 mm , 100% new