There are many types and materials of chalk on the market today, so the school of choice when it would pay more attention to the quality, but also to enhance the performance so chalk. Today, we will introduce a chalk chalk this is a new course, whenever a new chalk come out when people are of particular concern and would like to know something. This new type of chalk has a nice feature is the environmental clean sticky, a word that is not harmful to the body, very clean. No dust left the after use.

We know that ordinary chalk, chalk is the most common, inexpensive, but a little bad that after writing hand will leave a lot of dust, which is very good, but also because it will shine into the dust classrooms shrouded in a layer of dust, so in the long run hurt the body is not small. But now the market has a chalk factory production of chalk good response is to not let your hands contaminated after use, although chalk good cleaning. One or two are all right, that's a long time, there will always be residual toxic substances. The opponent is hurt. Now many manufacturers have noticed chalk this problem, they will find some regular factory stock, this thing is not only popular, quality is more secure. This is a standard people to choose.