1.Strong Resistance to demagnetization; 2.Excellent Br Resident induction; 3.Competitive prices with best quality. Neodymium Block Magnet 1. Material and Grade: Sintered Neodymium Ferrite BoronN35~N52, N35M~N50M, N30H~N48H, N30SH~N45SH, N28UH~N35UH, N28EH~N33EH2. Coating and test: Zn, Ni, NiCuNi, epoxy, electrophoresis, etc. Spray test, pressure test, peeling off test and thickness test are ...