In our teaching process, but let a person cannot leave the chalk from the survey, we found that there are some teachers don't know choose chalk. Through some professional personage communication, get some introduction here we can simply explain buy chalk some matters needing attention, after the choice for us to provide better help. First, because a lot of chalk appear on the market company different companies to provide the foundation of the quality and style are not the same. Buy said is equal to the waste, quality assured, and the price is affordable chalk is their wish. When selecting a chalk it is important to note that a few common sense and problem.

Such as first of all, we should be familiar with the market, consumers can log on to some chalk manufacturer web sites on ?