Welcome to the Twelfth International Symposium on Magnetic Bearings(ISMB12), it will be held in the beautiful city Wuhan, China, on August 21-24, 2010. The objective of the Twelfth International Symposium on Magnetic Bearings is the enhancement and communication of knowledge concerning the latest research on magnetic bearings science and technology worldwide. The symposium invites high original research and development papers in all areas related to magnetic bearings and related applications. We look forward to meeting you at the Twelfth International Symposium on Magnetic Bearings in Wuhan.