NINGBO ZHENHAI RIQIANG MAGNETIC MATERIAL CO., LTD Which is the original manufacture of permanent magnet and also committed to research, application of sintered NdFeB magnet, with annual capacity over 500 Tons. The products are mainly for industry. We can do the Nd Fe B Magnets in many grades and sizes as customer need. The grade such as :From N35 to N52;33M to 50M;35H to 48H; 33SH to 45SH;28UH to 40UH;28EH to 38EH, also the 28AH, 30AH and 33AH.All these magnets main used in industrial, also can used in daily lives. The Shapes and sizes such as: Disc Magnets, Block Magnets, Ring Magnets, Cylinder Magnets, Arc Magnets, Segment Magnets, Countersink Magnets, Sphere Magnets and Other Special shape as customer need.