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System is especially suitable for welding robot automatic welding and welding machine, the operator from dangerous working environment (such as a large welding structure, the operator need to observe arc welding state on high, or welding robot body damage accident movement, and so on and so forth.), will be the operator of radiation from the arc, arc pollution free environment, make its can concentrate on the status of welding, appropriate adjustments or welding parameters, welding torch position to ensure the welding quality of consistency.