Qingdao wuzhifeng Information Technology Co., Ltd. (hereinafter referred to as the "five fingers peak"), established in 1998, is a modern enterprise system by the establishment of high-tech enterprises. It is mainly engaged in the research and development of educational equipment series products, and the production of a comprehensive solution for the school to provide a comprehensive solution, and the implementation of professional enterprises. The main products are photosensitive hydrolyze environment-friendly blackboard writing pen, light quantum environmental protection teaching board, light quantum environmental protection magnetic film, interactive ultra short focal projector.