Characteristics: 1.AC auxiliary current and DC welding current can be used simultaneously, which improves the working efficiency and is convenient for operation. 2.Engine speed can be automatically reduced at zero load, for noise-deadening. 3.Engine oil level induction device will shut off engine automatically when engine oil is nearly sinished. 4.Super large fuel tank ensures continuous running,meaning its free of refueling for one or half day running. 5.As the standard model, the four castor model is very convenient for handling and storage.