... ,block,ring,disc and so on... 2).Certificate: ISO9001:2008 3).Grade: N35-N52, ETC 4).Located in Shanghai NdFeB magnet ... is an alloy magnet made from Nd,Fe,B and other metal elements ... 30SH-45SH,30UH-38UH and 30EH-35EH;4) Shape: ring,block,disc,bar and so on;5) Size: according to ... , magnetic holder, filters automobiles and so on; strong Ndfeb Magnet Square