Hydraulic activator:
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Working,, turning on, Welding transformer
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Spinning machine
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The atmosphere of the factory, rattling
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Machine engine gaining momentum
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Electric generator (hum)
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Box making machine
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On, off, Forklift, standby
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Lowers forks, Forklift raises
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Low frequency running engine
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Bottling plant
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Turn off, Air compressor turn on
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Compressor industry
★★★★★