Product Introduction:HT-S series is specially designed for sound insulation interlayer film.lt has anexcellent damping function for sound waves, which makes it extremely effective insuppressing the propagation of noise, thus ensuring the automotive or indoor environments are more comfortable. HT-S series sound insulation interlayer film, through the co-extrusion technology, adds a sound insulation core layer on the basis of the original interlayer film. The sound insulation. Compared with the standard interlayer film, the sound insulation interlayer film can improve the sound insulation performance by about 5 dB, which is the most sensitive sound frequency (1,000-4,000)Hz of the human ear.