... ,Best after-sale,Powerful function,Easily use CNC Plasma and Gas Cutting Control System (Model: SH-2012AH-QG) Designer, ... capacity, processing not subject to capacity constraints ;6 System provides four built-in intermediate relay, equipped with arc, discharge function, ... install, wiring, improve system reliability. 4 relay functions are: gas and preheat oxygen or to increase control; cutting oxygen or ...