... ,timely delivery,favourable price and execllent after-sale service.For more technical support,please visite our website: www.ougedianzi. ... bakelite bobbin ETD39Bobbin Features:High-frequency Bobbin Shape :vertical and horizontal Bobbin Range: EE,EI,EF, EFD, EPC,PQ,ECBobbin ... usefulness: be used for mobile phone charger,switching power supply ,green lighting ,LED drive ...