The noise is reduced by 40 dB, and sleep is not be

2022-07-22
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The environmental pollution brought by economic development makes people feel helpless. For example, if you move your home from the suburbs to the bustling urban area, you have to face the noise of the urban area

the environmental pollution brought by economic development makes people feel helpless. For example, if you move your home from the suburbs to the bustling urban area, you have to face the noise of the urban area

0-60 DB: the normal sound environment for human survival

in such an environment, we can live, read and sleep well. Exceeding this value will cause certain health hazards

especially for the living environment of the elderly and children, silence is very important, otherwise children can't grow up healthily and the elderly can't sleep peacefully

60-70 DB: it will affect sleep and rest

this should be the most common sound environment in urban life now

general vehicle driving will produce 60-80 DB noise, which will affect sleep and interfere with work. Living in this environment for a long time will affect some normal human physiological functions

traffic flow

square dance

noisy night market

airport of ups and downs

[advertising time]

how to reduce the noise to a range suitable for life

want to be quiet? Poetry Niemann doors and windows. The noise is reduced by 40 dB, and the sleep is better

hollow glass vacuum filled with argon

inert gas, effectively reducing diaphragmatic stress efficiency

four seal design

four seal design, multi cavity sound insulation, imported Tylenol sealant strip

15a hollow

the hollow width of the original automobile grade double-layer tempered glass is increased from 12a to 15A. With the same vacuum filled with argon, the sound insulation effect is improved by two times

environmental protection tax will be levied on January 1st, 2018. This is the first tax law reviewed and approved by the Standing Committee of the 12th National People's Congress, which is of great significance for giving full play to the positive role of Taxation in controlling and reducing pollutant emissions, protecting and improving the ecological environment

we should not only develop the economy, but also protect the environment. I hope that one day when we open the window, there will be fresh air and quiet blue sky

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