Rainbow has been committed to developing and manufacturing state-of-art teaching devices, mainly focusing on OMR scanners, interactive whiteboards and OMR answer sheets. All these products add a new and unique view to modern education.In conventional education, teachers often stay up to mark examination papers. Since OMR scanners are introduced into schools and campus, the conditions have changed a lot. On one hand, Optical mark recorder substantially improves efficiency and teachers never need work extra hours to read test papers. On the other hand, Rainbow OMR scanner features accuracy and durability. Its error rate is far lower than its counterpart, which ensures pinpoint accuracy and actually reflects the students\' learning level.Interactive whiteboard is a great invention of modern education. Rainbow interactive whiteboards are mainly infrared and electromagnetic, both of which enjoy great popularity among China and other countries in the world. They generally build well-deserved reputation and confidence among customers relying on their reliable quality and considerate after-sales services.