... ,ring,disc and so on. 2,Certificate:ISO9001:2008 3,Grade:N35-n52,etc 4,located in Shanghai or Ningbo NdFeB magnet ... is an alloy magnet made from NdFeB and other metal elements. It ... ,N28UH-N38UH,N28EH-N35EH,N28AH-N30AH;4) Shape: ring, block, disc, bar and so on;5) Size: according to customers' request ...