You can re-register jewelry v class is a mobile online learning platform specially designed for jewelers. When all the learning tasks are completed, and all the tests and knowledge points in adowa are completed and mastered, the system will conclude that you have learned them all. At this time, it will show that the student number has expired, but you can learn, but it is only the latest problem package. If you want to continue your study, you can re-register a student number of Jewelry Class V to study.