1.The Strongest magnet 2.Confirm to RoHs 3.With 5 days delivery time. ... and wonderful coercive force.1. Primary Material: Neodymium, iron, boron, rare-earth material2. Maximum working temperature: 80-220 degree celcius3. Density: 7 ... , Acoustics, Magnetic separators, Auto, VCM, MRI, Mobile accessories5. Grade available:N35-N52, N33M-N50M, N30H-N48H, N30SH-N45SH, N28UH-N40UH, N328EH ...