... develop new cores various materials, H40 ,H44 H95 etc EE,EC ,UY,UI,UF,SP, T(H),PM,Gu,PQ type ferrite corehigh ... power ferrite cores , Mn-Zn ferrite core,large size ferrite ... cores.material : PC40 PC44.transformer ferrite cores UFUF30, UF64, UF75 ...