HF arc-starting, pulse control and strong welding permeability. Be able to weld carbon steel, stainless steel, copper and titanor metal, etc. Be able to be equipped with round water-cooling equipment and suit for fitting up stainless steel, patching kitchen equipment and moulder. Able to welding plate with thickness from 0. 3mm to 10mm. Light and easy to carry. Rated input: 220V/28A Rated output: 18V/200A Output range:10-200A Open circuit voltage:42V Arcing way: HF Rated duty cycle: 60%. Efficiency: 85%.