... prices with best quality. Sintered NdFeB Magnet1. Material and Grades:Sintered Neodymium Ferrite BoronN35~N52, N35M~N50M, ... widely used in aviation, spaceflight, electron, mechanism, meter and medical treatment, loudspeakers, sensors, motors, rotors, wind turbines ... generators, magnet hooks, magnet holders, magnet filters, magnet rod, toys and accessories, etc. 5.Certificates: In 2001, ISO9001: 2000 ...