... core 1.Customized size and shape 2,High quality and low weight loss 3.Best price 4.Fast delivery toroidal magnetic ring core ... , 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× ... ×20, H102×65×20, H120×60×20 core, H124×60×40,H144×108×20 and H152 ...