Hydraulic down machine:
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Milling machine
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Dry cleaning
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Compressor industry
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Air compressor turn on, turn off
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Turning on, working,, Welding transformer
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Stitching machine
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Rattling, The atmosphere of the factory
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Welding transformer operation under load
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Stamping press
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Drone in a mine tunnel, Factory atmosphere
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Car factory
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Canning machine
★★★★★