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Contact Supplier1.three Welding Models: Dc Tig, Pulsed Tig, Dc Mma.2.mosfet Power Modules,25khz Inverter Frequency, Fast Response Time, High Arc Stability, Almost Spatter-free While Welding.3.with Multifunctions: Start/crater Arc Current, Increase/decrease Time, Base/crest Value Current, Pulse Frequency, Pulse Rate, Post Flow Time, Hf/friction Welding, Water/gas Cooling.4.multiple Protections: Delayed Start-up for Avoiding Current Shock, Lack-phase/over-current/over-heat/water Protections.5.high Compensation for Unstable Electricity Supply, High Efficiency and Energy Saving, Suitable for Working of Much Environment.