70 decibels is the noise boundary that affects health. For factories, production noise far exceeds this value. WISKIND uses professional-grade acoustic spectrum analysis instruments, based on the acoustic properties of materials, through precise acoustic measurements and in-depth research on the human auditory system, to launch the Acous acoustic sandwich panel.

When used only on the walls of large and medium-sized factories, it can achieve indoor noise reduction of about 1/3 and increase sound insulation by 100%. At the same time, it has good corrosion resistance and mechanical properties, becoming the first choice for noise reduction in industrial buildings and maintaining occupational

health and safety.

When the test range is 100-5000Hz, the average sound absorption coefficient of the Acous acoustic sandwich panel is 0.64, and the noise reduction coefficient NRC is 0.75, which belongs to Class II, close to the noise reduction coefficient of plate-shaped rock wool NRC is 0.85. The noise reduction coefficient of ordinary metal panels NRC is 0.15, which is lower than the classification range,and much lower than the Acous acoustic sandwich panel.

Experiments have shown that the probability of high-frequency noise passing through the ordinary acoustic sandwich panel is less than one in ten thousand, and the sound insulation performance of Acous is 100% higher than that. After 480 hours of neutral salt spray, the PE-coated perforated panels have no corrosion at the punching position, meeting the requirements for indoor use and having excellent durability.