... which is coursed during the usage course.Technical parameters: Machine No.RT300ART300Bvoltage220V220V/110Vpower supplycommon frequency power supplyenergy-Saving and high ... from low resistance material such as copper, aluminum..5.multiple control models: Four modes----single, automatic, precision, and conventional, ... .25, the user can order at any time Computer control Mould Welding Machine RT3000B