Signal for lunch at the factory:
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Crusher
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Turning on, Welding transformer, working,
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Postal sorting line
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The atmosphere of the factory, rattling
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Low frequency running engine
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Letter press
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Forklift truck moving away
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Heidelberian sorting printer
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Mill for grinding grain, Brewing unit
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Air blow, Air compressor
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Hydraulic pump
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Electric industrial motor
★★★★★