Conveyor, conveyor belt:
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Postal sorting line
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Hydraulic down machine
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Car factory
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Spinning machine
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Forklift approaching
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Stamping press
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Hammer knocking, Car factory, welding
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Circular knitting machine
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Grind wood with a grinder, noise in
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Box making machine
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Run, Compressor, shutdown, start
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Welding transformer operation under load
★★★★★