In theory, any material has sound insulation properties, even a thin sheet of printing paper can provide sound insulation. Therefore, many ordinary materials on the market are referred to as sound-absorbing panels by manufacturers, including gypsum board, magnesium board, calcium silicate board, wooden board, etc., which makes consumers easily deceived. One of the most important principles when choosing a sound-absorbing panel is whether the panel has an authoritative testing report. The most authoritative wall sound insulation testing report units in China include the Institute of Building Acoustics at Tsinghua University and Tongji University. Many manufacturers in the market are promoting the performance of their sound-absorbing panels, but they are unable to provide authoritative testing reports to confirm. All sound-absorbing panels and soundproofing coatings are tested at Tsinghua University and Tongji University, and official testing reports are issued indicating the sound insulation effect of the wall composed of the sound-absorbing panels. If a sound-absorbing panel is advertised for its good sound insulation performance but cannot provide a formal testing report, consumers must worry. Secondly, it is also important to pay attention to whether the sound-absorbing panels sold by the manufacturer and the samples sent for testing are the same product. If the samples sent for inspection are thickened, weighted, made of different materials, or specially treated, and the actual sold samples are different products, then the sold products will obviously not meet the sound insulation values indicated in the testing report. In this regard, consumers should pay attention to identifying the qualifications, credit, and reputation of manufacturers, and try to avoid being deceived as much as possible.