1.Name:EI33 2.Mn-Zn soft ferrite core 3.core cost: cheap and reasonable. 4.core advantage: high permeability, low loss we can provide kinds of soft ferrite core materials, more than 2000 specs of MnZn and NiZn ferrite magnetism cores. The products are widely used in a large variety of industries, telecommunications, computer and peripheral equipment, switch power, CRT color TV, liquid crystal ...