... bobbin range:EFD,EE,EF,EPC,ER,PQ,RM,UU,EC 3.supply the matched ferrite core bobbin| transformer bobbin ... core range:EE,EF,EFD,EPC,EER,DR,EC,PQ,UU,RMbobbin range: EE,EI,EF,EFD,EPC ... ,EC,EER,ER,PQ,UU,RM Advantage: 1.We ... timely delivery,favourable price and execllent after-sale service. · EC series applied in the linear filter ,current tranformer,smoothing choke coil ...