Box making machine:
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Grind metal on a grinding machine in a
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Standby, on, off, Forklift
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Hydraulic activator
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Print imprinted in cardboard, Notches
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Low frequency running engine
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Conveyor, conveyor belt
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Welding transformer operation under load
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Box making machine
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Compressor industry
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Turn off, Air compressor turn on
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Milling machine
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Hammer knocking, welding, Car factory
★★★★★