11 years production experience Mn-Zn soft ferrite core low cost high permeability,low loss REACH,ROHS approved high grade soft ferrite magnetic ... military industry.EE series,EI series,T series / toroidal ferrite,EP series,EC series,UU series,RM series,PQ series,EF series,UF series,DS series,EFD series,EPC series,P series,LP series,and so ...