big size, high power Mn-Zn ferrite cores . We are specialized in making high power Mn-Zn ferrite cores for about 20 years, our products are applied to welding machine, induction heating, ozone generator , remove dirt with electric , galvanization electrical source ,nuclear magnetic resonance imaging and so on.Specification of UF240B :ABCDEF240+5 160+2 40+2 40+0.5 120+05 160+0..5 LeAeVeALWeight(g) ...