The writing board has the function of multi-purpose, including projection function and dust-free writing. It is mainly used for teaching.Generally, the thickness of the writing board is about 0.2mm. Five layers of special materials are synthesized by high-tech methods. The five qualities are integrated into one, which makes the writing board possess distinctive characteristics. Its reluctance ratio 

The projection screen is increased by 20%, which makes the image brighter and clearer, significantly improves the projection brightness, and avoids the trouble of turning off lights and closing Windows. Comprehensive elimination of dust, ring.

Keep healthy, handwriting clearer, writing more smoothly. Preset grid writing surface, without the help of tools, at hand can face beautiful tables and graphics.

A notebook, "notebook," in everyday life, means a small book you use to keep track of things. In the narrow sense, it refers to a lined book, in the broad sense, a pamphlet used.In the absence of writing, human beings used on numbers or events, express a certain meaning, in order to convey information. It can be seen from the paintings of the primitive society in the net pattern, the rope pattern on the pottery and the pottery net pendant, etc., that the rope (counting) was one of the records widely used by the primitive ancestors. Notepad can not only time, just like the ancient people (knot rope to remember), but also spread culture, because of life and gradually rough heart.