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MBI is a company that possesses some 25 patents worldwide by research and development of bicycle hub internal gear and electric two-wheel motor gear for 20years. MBI began its manufacturing of hub built in 3speed gear as the first in Korea and fourth in the world in January 2011 and with our technology and research, we develop and mass-produce Infinia that in suit with center-motor type E-bike and always speed change is possible even in shifting under load. In the future, we are committed to grow into world best gear specialty company on the basis of unyielding technology innovation and we hope you to have your unyielding interest and encouragement.