Circular knitting machine:
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Room noise, Glass bottles on a conveyor line
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Off, on, standby, Forklift
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General noise, loaders, Work in a warehouse
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Postal sorting line
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Air compressor, air blow
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Noise in, Grind wood with a grinder
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Newspaper press
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Low frequency running engine
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Letter press
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Steam pump
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Turning on, Welding transformer, working,
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Bottling plant
★★★★★