How to choose soundproofing panels

2. Is there a testing report on the performance of the soundproofing board. In theory, any material has sound insulation performance, even a thin piece of printing paper can provide sound insulation. Therefore, many materials in the market that were originally very ordinary are called sound insulation boards by manufacturers, including gypsum boards, magnesium boards, calcium silicate boards, wooden boards, etc., which makes consumers easily deceived. One of the important principles for selecting soundproof panels is whether there is an authoritative testing report for this type of soundproof panel. At present, the authoritative wall sound insulation test report units in China include the Institute of architectural acoustics of Tsinghua University and Tongji University. Many manufacturers in the market are promoting themselves how good is the performance of our soundproof panels, but we cannot provide authoritative testing reports to confirm it.