Working machine engine:
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Noise in, Grind wood with a grinder
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Working,, Welding transformer, turning on
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Compressor industry
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Grind metal on a grinding machine in a
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Electric welding
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Print imprinted in cardboard, Notches
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Brewing unit, mill for grinding grain
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Lathe turning on, work, stop
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Automatic folder
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Signal for lunch at the factory
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Box making machine
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Stitching machine
★★★★★