Ring Neodymium Magnets 1)High intrinsic coercive force ; 2)Strong magnetic force ; 3)Max continuous working temperature Ring Nickel Zn Coating Neodymium Magnet 1. Materials:Neodymium-Iron-Boron;2. Grades:N33-N52, 33M-48M, 33H-48H, 30SH-45SH, 30UH-38UH and 30EH-35EH;3. Shapes and sizes: according to customers' request;4. Coatings: Ni, Zn, gold, copper, epoxy, chemical, parylene and so on;.5. ...