Advantages and disadvantages of traditional blackboard writing

Blackboard is a traditional name, which appears in schools. At present, it is mainly the names of primary schools and secondary schools.

Whiteboard is a writing plane made of white metal plate. It is an upgraded version of the blackboard. Its greatest contribution should be to solve the problem of producing a lot of dust when writing, which is extremely unhealthy to human body. The biggest defect is that it has been used for a long time, and the handwriting on the board is not clean and slowly turns black; Mainly used for office, some colleges and families.

In recent years, another kind of whiteboard-glass whiteboard or glass blackboard has appeared in universities and companies with good conditions in big cities. The main material is explosion-proof tempered glass, and the paint is magnetic. The biggest advantage is that the board is easy to clean and can be used permanently. Mainly used for business office meetings, school teaching, home decoration, children's graffiti and so on. At present, this kind of writing product is specially provided in China, such as Dianao Glass Blackboard Factory.