With buttion and knob selection,
it can easily and accurately achieve all functions:
1) Operation Mode: SYN-MIG/ MAN-MIG/ MMA/ TIG
2) Material Selection: Fe / Ss / Al / CuSi/ CuAl/ Flux
3) Wire Dia. Selection: 0.6/0.8/0.9/1.2
4) Gas Selection: CO2 / Ar / CO2+Ar