1,Low frequency type has isolation transformers, high frequency type does not have it.
2, Low frequency type does have DC component, high frequency machine has DC component
3, Low frequency type has high reliability, overload capability and strong impact, high frequency type reliability is poor, load capacity and impact are poorer than that of low frequency type.
4,Low frequency type is big volume, heavy weight and higher price ; high-frequency machine is small size, light weight and low price
No.220 Huayuan Road Jinan city China