ferrite Cores;ECUYF ferriteCores;EC Cores;EE Cores;EI Cores;EPC cores;UF Cores; UI Cores; FED Cores; RM Cores;URS Cores; ferrite Core Round,Block Disc,Ring,Arc,Segment, or other special shapes These products are widely used in speakers, earphones, sound emitters and other audio products. They are also suitable for Micro product of Auto, electric motors, National defence, Speaker, Computer, ...