white board sizes with stand. Resources. Users can create, retrieve, apply, modify, etc. components according to their needs, and save them in the personal component library. The component library can not only meet the needs of teachers and students to retrieve resources based on knowledge points, but also provide the subject components that can be more conveniently applied to classroom teaching. For example, when teachers refer to Mr. Zhu Ziqing, they can call Zhu Ziqing's theme components, including Zhu Ziqing. Information such as life, major works, and background of the times will help students better understand the author. And if these are obtained by querying one by one from the component library, it will be cumbersome, and it is not easy to collect comprehensively at one time.. The IQAio GR519 is an upgraded lightweight version based on the original IQAio GR511. The original dual-cavity structure was changed to a bottom-edge structure, so that the minimalist design accommodates modern classrooms and conference rooms. With one IQProjector V2 and one IQView E3821, you can achieve flexible and intelligent classroom.