... ,iron and boron,is the third generation of the rare-earth permanent magnets,Sintered Ndfeb is the strongest permanent magnets ... N30AH,N33AH,N35AH(Max.operational temperature:up to 230c)ndfeb rare earth magnet Outsanding product:1)high performance:N52,N48M, ... days,average low weight loss less than 2 mg/cm2ndfeb rare earth magnet applications:loudspeakers,motor assemblies,windmill,Home appliance,acousics ...