Gas welding:
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Room noise, Glass bottles on a conveyor line
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Conveyor belt, Conveyor
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Signal for lunch at the factory
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Turn off, Air compressor turn on
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Hydraulic activator
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Steam pump
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Standby, off, on, Forklift
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Small centrifuge
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Industrial exhaust fan
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Box making machine
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Work in a warehouse, loaders, general noise
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Canning machine
★★★★★