As an ancient writing tool, chalk has become an indispensable presence in education, conferences, and public speeches due to its unique material, writing style, and cultural heritage. It witnesses the transmission of knowledge and the collision of wisdom, and also carries the emotions and culture of generation after generation. In the future, no matter how technology develops, chalk will continue to play its unique charm and value, contributing its own strength to the progress of human civilization.

Dust free chalk is an improved product of ordinary chalk, aimed at eliminating classroom chalk dust pollution. It only adds oil or polyol substances as binders to ordinary chalk, and then adds fillers with higher density, such as clay, mudstone, cement, etc. This can increase the density and volume of chalk dust, making it difficult to fly away. However, in practical applications, its effect on reducing chalk dust pollution is not very obvious.