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.

Chalk has become a powerful assistant in the field of education due to its unique material and texture. It is made of limestone and after fine processing, it presents a smooth and hard surface. This material allows chalk to maintain stable friction and clarity during writing, with smooth and less blurry handwriting. At the same time, the writing effect of chalk also has a certain degree of durability, and can remain relatively clear even in damp or friction environments.

Chalk, an ancient writing tool, has witnessed the transmission of countless knowledge and sparks of wisdom with the development of human civilization. It has become an indispensable presence in education, conferences, and public speeches due to its unique materials and writing style. Today, let's enter the world of chalk together and feel its charm and heritage.

Regular chalk is prone to moisture absorption, decreased hardness, and easy breakage when stored for a long time. The blackboards used in schools include cement boards, wooden boards, and ground glass boards. Due to different levels of smoothness on the surface of the blackboards, the softness and hardness of the chalk are also required. The new generation of dust-free chalk can change its softness and hardness at will, and will not slip or break easily when used on various blackboards. It also writes fluently, effortlessly, and has a good hand feel. Dust free chalk is a high-tech product that has been successfully developed in addition to cosmetic materials used in production. Environmentally friendly, non-toxic, dust-free, it is an ideal teaching and office supplies for modern teaching.

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.