... 3.Best price 4.Fast delivery Zhejiang ring core transformer in transformers Brief Introduction : we can ... provide kinds of soft ferrite core materials, more than 2000 specs of MnZn ... , choose the appropriate oresEpoxy resin coatingFerrite oroidal core has accomplished initial permeability, it enables transformers ... cores includes H70×45×17 core, H80×50×20 core, H80×55×20 core, H99×55×15, H100× ...