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noise reduction box for crusher in nepal

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noise reduction box for crusher in nepal

Oct 01 2020 · The best passive noisecanceling earmuffs are usually huge and they are packed with dense noiseabsorbing foam With all this extra weight and size you can only get around 15 to 20 maybe even as high as 25 decibels of noise reduction Active noisecanceling earmuffs can do everything that a passive one does and probably more

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