MIG CO2 Welding Equipment Machines Welder. The CO2 welding power is used in MIG & MAG welding. MIG Spark CO2 Welding ... power is used in MIG & MAG welding. Our machine has character of high efficiency, energy saving, small splash, low noise, easy to control ... .5mm 2. Cost saving and efficiency improving, 3. With wire machine, and easy and considerable for operation, 4. High welding speed ...