... and black epoxy. c): Used in industrial neodymium magnet,ndfeb magnetic material,magnet.a): Size Φ3----Φ280mm for Ring, and strange size ... Phosphated ,Gold, Silver, Epoxy etc.d): Use Nd material rather than Pr-nd material to make the property stable, It is wildly ... earphone , etc.e):Maximum working temperature: 240°Cf):Lightweight loss material: ≤1mg/cm2g):Low temperature co-efficient: ≤-0.45°Ch):Used ...