... (Max. Operational temperature: Up to 230c) Sintered NdFeB Speaker Magnets Outsanding product:1)high performance:N52,N48M,48SH,42UH ... weight loss less than 2 mg/cm2 Sintered NdFeB Speaker Magnets applications:loudspeakers,motor assemblies,windmill,Home appliance,acousics ... ,communication equipment,toy,car,servomotor,step motor,DC motor and linear motor, ...