... 35M-48M,30H-45H,30SH-42SH,28UH-38UH and 30EH4) Shape: ring,block,disc,bar and so on;5) Size: according to customers ... ' request;6) Coating: Ni, Zn, gold, copper, epoxy and so on; ... 7) Application:motors, sensors, microphones, wind turbines, wind generators, VCMs in hard disk drives, printer, switchboard, ...