High Permeability: ZF-1B, ZF-1C, ZF-1D, ZF-N2 
High Q Material : ZF-0005, ZF-001, ZF-002, ZF-004, ZF-006,ZF-01

High impedence material: ZF-1B,ZF-1A,ZF-1,ZF-09,ZF-07 
Wide temperature range and high impedence material:ZF-09T,ZF-1T