Cx4500 Microcomputer Spot Welding Machine High Power Spot Welder With 025mm Current Adjustment Microcomputer Controlled Spot Welder With Adjustable Pulse Duration 20ms 1s And Wide Current Range 40 1600a Rs5138cx4500 Microcomputer Spot Welding Machine High Power Spot Welder With 025mm Current Adjustment Microcomputer Controlled Spot Welder With Adjustable Pulse Duration 20ms 1s And Wide Current Range 40 1600a Rs5138 67f415983520019a097e6b66