Due to the composite insulation material of high performance & high temperature resistance and frameless process, the reactor’s heat-resisting ability is strong and the insulation class F&H are both available. The process of the argon arc welding adopted by our company makes the reactors characterized by low noise, small magnetic flux leakage and stable inductance. Coiled with foil winding process, the reactors have strong resistance to electric magnetic force, and neat appearance. With the core made of low loss cold-rolled silicon steel sheets, our reactors have the advantages of high reliability, small size, light weight and low cost.