... : Ring, Arc, Block, etc 3. Coating: Ni, Zn, etc wind turbine generator NdFeB magnets place of origin shenzhen,guangdong,china composite ... -40ehcoatingNi, Zn, gold, copper, epoxy and so onapplication industrial magnent,mini-motor Permanent magnetic resonance sound device magnetic suspension, DC motors ... ,L/C,D/P,D/A and so on wind turbine generator NdFeB magnets