... temperature Characteristics CE, ISO, Yueqing Shangjing Non-insulated Diode Modules MDG(AA), MDY(AA) Welder ClassMDx80, MDx100, MDx150, MDx200, MDx250, MDx300FeaturesNon ... Class OutlinesHigh Frequency Thyristor Welder Class Non-insulated Diode Modules MDG(AA), MDY(AA)