... .used for transformer 4.ISO&CE certificate plastic bobbin:EE type:1.Bobbin material is PBT2.Bobbin Features is High-frequency ... ,EC,EF,EFD,ETD,EPC,PQ,RM,UU.8.Can be supplied with their match cores 9.Bobin Usefulness that can be ... feel free to inquire us at any your convenience EE type transformer plastic bobbin