Features: 1.The arc energy is highly concentrated, with good stability and strong cutting force 2. Cutting speed (3-5 times of gas cutting) 3.Cutting costs are low 4.Incision stenosis. Clean and tidy; close to vertical. 5.Small deformation of workpiece 6.The cutting current is adjustable continuously 7.Easy arc setting 8.The operation is very convenient 9.Light weight, small size, easy to move 10.High efficiency, high power factor, it is a kind of energy saving equipment. 11.Low noise and strong adaptability 12.Has two functions of self-locking and non self locking, adapt to the length of slot without requirement, can reduce the labor intensity of workers. 13.Easy to form cutting equipment