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Traditional chalk ingredients often let people suffering from dry skin, excessive inhalation of dust and other problems. Chalk improved, although there are improvements, but there are other problems, the price can't be depressed. Make improvements to these problems so that more children in the learning process of a choice, become articles of child can feel at ease, but also on behalf of other persons and teachers can feel at ease with the use of the Earth along with the relative reduction in injuries.
CHALK GO GREEN
Taipei City, Taiwan