... 4.Good corrosion resistance sintered or bonded NdFeb magnet features:1) NdFeb magnet has superior magnetic properties than other magnets2) ... type rare earth magnet7) Irreversible loss at high temperature8) Types: N30, N33, N35, N38, N40, N42, N30M, N33M, N35M, N38M, N40M ... packing or other requirementsWelcome your inquiry about our Neodymium Permanent Magnets.If you have any question,pls fell free ...