... please offer the following details :Magnets grade :from N35 To N50 ,from N Series to UH Series ... Material Grade of NdFeB magnets: Magnet N-( N35, N38, N40, N42, N45, N48, N50), Magnet M-(35M, 38M, 40M, 42M ... , 45M, 48M), Magnet H-(35H, 38H, 40H, 42H, 45H), Magnet ... resonance imaging, sensors, loudspeakers etc. Neodymium magnetic arc magnet