industrial material Magnet(NdFeB magnet) is made from Neodymium,Iron,Boron and some other transitive metallic elements to make it strong1. General features 1.) Grades:N33,N35,N38,N40,N42,N45,N48,N50,N52, (M, H, SH, EH, UH ) 2.) Coatings: Ni, Ni-Cu-Ni, Zn, white-blue Zn, Expoy, Gold, and etc. 3.) Sizes: according to your requirments 4.)..