whiteboard manufacturers in sri lanka. The function of media equipment is integrated into one, which satisfies the needs of modern teaching applications in both form and content. In the aspects of technology, operation and compatibility, the problems of various devices in the multimedia classroom, such as scattered devices, complicated connections and cumbersome operations, have been solved, which greatly improves the flexibility of equipment use, not only expands the expression of teaching, but also enriches the teaching methods and enables the classroom. Teaching has become more lively and lively. In addition, the all-in-one adopts the industry-leading multi-touch technology, which can effectively block the interference light, the touch response is sensitive, the writing is smooth, and it is convenient for the operation of the demonstration, video playback and auxiliary teaching tools. This product is equipped with a new intelligent Hisense chip, which can be written and annotated in any channel without relying on it. Not only that, but the product also has a smooth writing experience, and it is easy and efficient to call out the writing software on any operation interface with a single click. Deep integration with dual systems, dual system operation. 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.