... system, reliable quality, and high control precision. HL- WDI Spot Welder Description:Product name : HL- WDI Spot Welder1.Main characteristics: Adopt microprocessor ... with different combination, it’s suitable for the different weldment. 2.Main technique parameter: Power supply: 220V±10%, 50HZ±1HZ or ... % Storage condition: temperature -10°C~55°C Relative humidity ≤80%2,Operation picture