1.EP soft magnetic power core. 2.Mn-Zn ferrite. 3.ISO9001:2000. 4.Stable performance & competitive price 1. ... automation, household appliances, industrial instrument and etc.. 2.Compostion: Mn-Zn ferrite power.3.Grade: RM1.8KD, RM2.3KD, RM10KD.4 ... back transformers in B/W and color TV sets Mn-Zn EP soft ferrite magnetic core