... Specifications/Special Features:Customized designs and specifications are acceptedVarious types of transformers available, PQ, CI, UI, EFD, EP, ER, EPC, POT, RM ... , 39, 44, 49, 54, 59EFD-15, 20, 25, 30The introduction of transformersEC, EE.EI and PQ type high frequency switch transformerEP ... : wave carrier filter, power transformer and aux-power transformer voltage transformers