Unimagnet manufacture more than thirty grade MnZn Ferrite core and twenty grade NiZn ferrite core, widely range from UI,CI,EM,EPC,EP,P,LP,ED,RM,PQ,PQI,FEE,FEI,UF,T,EK,I,EI,EE,ER,EIR,EER,UY,UYF,AR,URS etc,meet your various requirement.