... and lighter weight in designing devices than any other magnets.3) NdFeB Magnets are of different grades, such as:N,M,H ... oxidation or rust, and elimination. So we can provide NdFeB magnets with surface coating, such as: NiCuNi, Zn, chemical Ni, Epoxy, phosphated ... 2005. Compared to the products of the other companies, our magnets have the specific advantages, such as: lower temperature coefficient of ...