1.shape:stick,black,ring,disc and so on. 2,Certificate:ISO9001:2008 3, ... NdFeB magnet is an alloy magnet made from NdFeB and other metal elements. It is with the strongest magnetism ... -N38UH,N28EH-N35EH,N28AH-N30AH;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;7) Application: sensors, motors, rotors, wind turbines, ...