... , automatic control, green lighting, instrument and apparatus, the automobile electronics, and military industry. Features:According to using field in ... ferric oxide, choose the appropriate oresEpoxy resin coatingFerrite oroidal core has accomplished initial permeability, it enables transformers to be ... T cores includes H70×45×17 core, H80×50×20 core, H80×55×20 core, H99×55×15, H100×55×20 ...