What Is Liquid Chalk

- Nov 08, 2017-

Non-toxic Harmless no noise no dust flying, green, clean, fluent writing, clear handwriting, bright color, easy to wipe, recycling (liquid can be poured, pen can be replaced), the protection of audio-visual equipment, save money, especially for teachers and students health (do not pollute the indoor air, conducive to the healthy growth of young children, reduce the occupational disease)