Concrete Crusher Noise Level

Concrete Crusher Noise Level

When sound levels exceed Noise Permissible Exposure Levels Table N1 eg 8 hours permitted duration per workday for 90 dBA sound level Provide hearing protectors if above controls fail to reduce sound levels within Permissible Exposure Levels Table N1 Impulsive or impact noise.

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Zhengzhou High-tech Zone, China

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