Insert a facility between the sound source and the receiver to make the sound wave propagate with a significant additional attenuation, thereby reducing the effect of noise in a certain area where the receiver is located. Such a facility is called a sound barrier. According to different uses, it can be divided into: railway sound barrier, highway sound barrier, urban landscape sound barrier, residential area noise reduction barrier, etc. According to the structure of the sound barrier, it is divided into a vertical sound barrier, a semi-enclosed sound barrier, and a fully enclosed sound barrier. The sound barrier is beautiful in appearance, exquisitely made, convenient for transportation and installation, low cost, and long service life. It is especially suitable for noise reduction projects on elevated highways, urban light rails and subways. It is the most ideal sound insulation and noise reduction facility for modern cities. The height of the sound barrier is generally between 1m and 5m, and the average noise reduction in the effective coverage area is 10-15dB (125Hz-4000Hz, 1/3 octave), up to 20dB. Generally speaking, the higher the sound barrier, or the farther away from the sound barrier, the better the noise reduction effect. Since its establishment, the company has developed a series of various sound barrier products, many of which have obtained national patents and national-level new products. Products are widely used in domestic rail transit, viaducts and highways and other projects.   Product part honor certificate