custom rare earth magnets wholesale ,NdFeb magnet ring 1.Good quality and price 2.Customized size 3.Short lead time custom rare earth magnets wholesale ,NdFeb magnet ring1)Material:Sintered Neodymium-Iron-Boron2)Temperature:the max operation temp is up to 200 degree centigrade or 380 curie temperature3)Grade:N30-N40,N42,M,H,SH,UH,EH4)Shape:ring5)Size:according to customers' request6)Coating:Ni, ...