... to date,It has excellent properties of high remanence,coercivity,and Max.energy product. Sintered NdFeB Speaker Magnets gradeN35, N38, N40, N42, N45, N48 ... )N30AH, N33AH, N35AH(Max. Operational temperature: Up to 230c) Sintered NdFeB Speaker Magnets Outsanding product:1)high performance:N52,N48M,48SH,42UH,38EH,33AH2 ...