Japan's Dacheng Construction Co., Ltd. uses waste styrene foams to manufacture low-cost sound-damping materials and has received good sound-damping effects. After the waste foam is crushed, it is heated by far-infrared radiation and the volume is reduced to 1/20 or less. Based on it, it is mixed with special cement to make "moke sugar"-like building materials. The average noise cancellation effect is 60%, and the noise of some frequencies can be over 90%. Its advantage is that the manufacturing cost is about 20% lower than that of the existing sound-absorbing material, the specific gravity is 0.65, it is lighter to carry, and the durability and water resistance are good. This sound-absorbing material has been used as walls and ceilings for soundproofing at power stations, reducing the noise generated at power stations to below the limit. It is believed that it can also be used to make outdoor soundproofing materials such as noise barriers for highways, which are widely used.
PVC Slats Infilled Fence
A Privacy Fence is a type of fence that is designed to provide privacy and security to a property. It is typically taller and more solid than other types of fences.
Privacy fences are commonly used in residential areas to create a barrier between neighboring properties, blocking the view from outside and preventing strangers from easily accessing the property. They can also help reduce noise and provide a sense of seclusion.
Privacy fences are commonly used to enclose backyards, swimming pools, and other outdoor living spaces.
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