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    As the noise above 85dB in the environment constantly will make everyone deaf and suffer hearing loss early in life, the environmental sound absorber is required to reduce the environmental noise levels. Eg. My mom is living in remote areas that is facing a highway but we suffer hearing noise from mobile vehicles' speeding sound and horn in the jam daily. That could be part of the reason she...

    €9 (Avg Bid)
    €9
    4 propositions