... 5 years. 1,property of our magnet All the material is rare earth alloy with Neodymium(Nd),Praseodymium(Pr) Iron(Fe),Boron ... (B),Dysprosium(Dy),Holmium(Ho) and Terbium(Tb) . 2,Quality of our magnet every ... to control the quality .3,the main use of our magnet Motor,IT industry ,acoustics ,Automotive,wind power ,comunication equipments ect4reasonable ...