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EI114 Low Frequency Transformer BobbinEI114 ferrite bobbin, bobbin size=75.2mmX56.6mmX109.3mm. PET material EE114 coil bobbin for transformers, no pins EI114 bobbin, we are ISO9001/2015 certificated transformer bobbin factory, we provide make new bobbin tooling service, in order to meet special size bobbin requirements.