... : Ni,NICUNI,Zn,Silver,Gold,Phosphate etc Details about our neodymium magnet:a/ Our capacity of production:NdFeB magnet: 2160T/yearHard ... Zn, Zn3+Cr, gold, sliver, epoxy, phosphate, passivate.d/ Grades: N35-N52, N35M-N50M, N30H-N48H,N30SH-N45SH, N30UH-N40UH,N30EH ...