Glass bottles on a conveyor line, room noise:
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Electric industrial motor
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Box making machine
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Automatic folder
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Print imprinted in cardboard, Notches
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Small centrifuge
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Brewing unit, fluid drilling
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Loaders, Work in a warehouse, general noise
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Bottling plant
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Industrial exhaust fan
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Conveyor, conveyor belt
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Automatic telephone switch
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Power Plant Water Pumps
★★★★★