Beihai composite railroad sound barrier is divided into reflective type sound barrier with pure sound insulation, and composite sound barrier with combination of sound absorption and sound insulation, the latter is made for more effective sound insulation. Most of the sound barriers choose the mixed type of sound absorption and sound insulation, which is characterized by targeted control of the generation and transmission characteristics of railroad noise. Railroad sound barrier specification parameters: Material: aluminum plate, galvanized plate, PC plate, acrylic, high strength GRC. Hole type: louvered hole type, round hole type Plate thickness: 1--2mm (can be produced according to needs) Thickness of finished products: 10-16cm (can be produced according to needs) Width of sound barrier wall: 40cm (can be produced according to needs) Length is processed and produced according to needs Surface treatment: high pressure electrostatic spraying (can be sprayed in various colors according to needs) Specific specifications and sizes can be customized according to drawings or customers' suggestions. This kind of product has water resistance, heat resistance, UV resistance, and will not reduce performance or quality abnormality caused by rain temperature change. According to its structure, it can be divided into upright type, folded angle type, top curved and other forms. In addition, there are transparent sound insulation panels that gradually attenuate the noise reflected back and forth in the strip lane to achieve the sound insulation effect. Advantages: good durability, aesthetic and environmental harmony.