1.
ndfeb magnet   ndfeb magnet   magnetic material   alnico   alnico magnet   alnico bar magnet   alnico   alnico   alnico   alnico   samarium magnet   smco magnet   smco   smco   bonded ferrite magnet   permanent magnet   permanent magnet   magnet   permanent magnet   permanent magnet  

2.
ndfeb permanent magnet   permanent magnet   ndfeb magnet   smco   alnico bar magnet   alnico bonded magnet   alnico magnet   alnico magnet   alnico magnet   alnico magnet   sintered smco   smco   smco magnet   smco magnett   magnet   bonded magnet   magnet   permanent magnet   magnet   bonded permanent magnet  

3.
magnet  magnet  magnet  ferrite magnet  magnet  alnico magnet  magnet  permanent magnet  permanent magnet  magnet  magnet  alnico  sintered smco  permanent magnet  permanent magnet  ferrite magnet  ferrite magnet  bonded ferrite magnet  bonded ferrite magnet  magnet