... technology1. Quality Assurance ISO9001:2000, RoHS report by SGS, CP65 Certificate, Reach Certificate2. You decide the coating, shape, sizeSurface treatment: ... +Ni and Cr3+ZnSize available: 0.5-200mmShape: Block, Square, Disc, Cylinder, Ring, Rod, Bar, Stick, Tile, Fan, Ball3. Competitive, ... visit our factory and cooperate with esteemed OEM!! round disc permanent magnets/ring magnets/neodymium magnets