Acoustic field: the speaker, receiver, microphone, alarm, stage audio, car audio and so on. Electronics: permanent magnetic actuator vacuum circuit breakers, magnetic relays, meter, meter, sound meter, a reed switch, sensors. Electrical field: VCM, CD / DVD-ROM, generators, motors, servo motors, micro-motors, motors, vibration motors. Machinery and equipment: magnetic separation, magnetic crane, magnetic machinery. Healthcare: MRI scanners, medical equipment, magnetic health products and so on. Other industries: magnetized Wax, pipe decaling, magnetic fixture, automatic mahjong machine, magnetic locks, doors and window magnetic, magnetic luggage, leather magnetic toys, magnetic tools, gifts and packaging. Neodymium block magnet is very popular for its cost-effective. The permanent magnet material based on the inter metallic compound Nd2Fe14B make it has good mechanical properties. At the same time, the chemical composition in the production process is adjusted and the surface coating treatment method is adopted to make it more applicable