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Maglev is a no-contact electromagnetic levitation, guidance and drive system Transrapid system. Its speed can reach more than 500 km, is the world's fastest passenger ground transportation, there are fast, strong climbing ability, low energy consumption, running noise, safe and comfortable, not oil, less pollution, and low price . And it uses uses elevated way, magnetic tubes taking up very little arable land. Maglev train using magnetic means that these basic principles are suspended in the rail up to replace the old steel wheel and track trains. Maglev technology uses electromagnetic force to hold the entire train car, the German engineer Hermann Kemper put forward the principle of electromagnetic levitation, maglev train and apply for a patent in 1934. After the 1970s, as the world's industrialized countries continue to strengthen economic strength, in order to improve transport capacity to meet the needs of their economic development, ndfeb magnets Germany, Japan, the United States, Canada, France, Britain and other developed countries have begun to conduct magnetic levitation transportation system planning development.