1) Material: Sintered Neodymium-Iron-Boron; 2) Temperature: the max operation temp is up to 200 degree centigrade or 380 curie temperature; 3) Grade:N33-N52,33M-48M,33H-48H,30SH-45SH,30UH-38UH and 30EH-35EH; 4) Shape: ring,block,disc,bar and so on; 5) Size: according to customers' request; 6) Coating: Ni, Zn, gold, copper, epoxy and so on;