美国WTC中频电阻焊说明书，资料很详细，这款电阻焊性能非常好，国内最好的焊接也不及他一二，行内兄弟多看看，让我们国产产品雄起来！-US WTC IF resistance welding manual, information is very detailed, this resistance welding performance is very good, the best domestic welding and he is not one or two, in-line multi-br