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Welding is an important industrial activity worldwide which involving millions of practitioners. Due to the influence of welding method, welding dust concentration, ventilation, weather and other factors, the exposure of the welder is different. And resulting in different respiratory symptoms, including decreased lung function, welder's pneumoconiosis and even lung cancer, which seriously affects the life quality of the worker. Through referring to literatures, the research status of welding dust and respiratory diseases was summarized
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