... 9001/9004/19011: 2000, SGS certification 3.high quality permanent magnetic material Magnet(NdFeB magnet) is made from Neodymium,Iron,Boron and ... disc, cylinder, sphere, block ,ring ,tile, arc, and etc.High magnetic performance (Br: 11,000 to 14,500 Gs,Hci: 11 ... pick-up of optical disk drive), mobile phones, wind generator, magnetic resonance image, Hi-Fi system, auto motors, etc. Certifications: ...