Adopting advanced inverter technique and excellent imported power equipment. high efficiency, small in size and light weight. Use PWM control technology and constant current output control. Protection equipment are set internally to prevent over heating, over current etc. ensure safe operation. Adopting contact or non-contact cutting and strong striking performance. Soft magnetic ferrite materials are use in high frequency transformer, which is small wastage, high conversion rate, high efficiency and energy-saving. Simple structure, excellent technics, durability, reliability, and easy maintenance. Stables cutting current and smoooth cutting seam. Adopting passive power factor correction, and high in power factor.