white board supplier. Domestic research on the application of educational whiteboard systems to education and teaching can be divided into two categories. The first category is the interactive whiteboard system for teaching experimental research or case study in classroom teaching in primary and secondary schools; the other is experimental research for teaching after the development of electronic whiteboard technology. Since the focus of the second type of research lies in the technical development of a certain electronic whiteboard, the corresponding teaching experimental research is not in-depth, and will not be further elaborated here. In the first type of research, a series of studies on the "Chinese-British cooperative interactive whiteboard experimental research project" jointly sponsored by the Distance Education Research Institute of the Capital Normal University, the Beijing Academy of Educational Sciences and the relevant primary and secondary schools in Beijing Results. In addition, during the ??Eleventh Five-Year Plan?? period, the teaching application and research of interactive whiteboards in primary and secondary schools, which are being carried out by many education departments and some small and medium-sized schools across the country, is also an important part of such research. One of the things worth mentioning is the ??Eleventh Five-Year?? National Education Technology Research Key Project of the Central Audio-visual Education Center, ??Multi-learning Research Based on Interactive Whiteboard??.. 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.