... 2. High permeability , low-power loss 3.provide the match bobbin 4.series: EE,EI,EF,EFD,EER,DR,EC,PQ ... ferrite cores, ferrite pot core, ferrite rod cores, soft ferrite core, high permeability ferrite cores, aetd ferrite core, n87 ferrite core, ef20 ferrite core, round ferrite core, L shape ferrite ...