Laser welding:
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Brewing unit, fluid drilling
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Low frequency running engine
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Signal for lunch at the factory
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Loaders, general noise, Work in a warehouse
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Air compressor, air blow
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Printing press
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Automatic folder
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Car factory
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Work, jamming, Generator, start
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Letter press
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Off, Forklift, standby, on
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Drone in a mine tunnel, Factory atmosphere
★★★★★