기능

• It is thicker (13 mm in diameter) than conventional products (JIS standard), so it can be written easily and reliably.
• The thickness is easy to hold, and it is a chalk that resists fatigue even when used for a long time.
• It is a component of scallop shell, which is more vivid, less powdery and less scattered.
• Dustless chalk is a product whose main ingredient is calcium carbonate, which is also used in toothpaste, and is safe and secure for the body.
• Compared with gypsum chalk, this chalk has a high specific gravity and hardly dusts.
• It is 1.6 times more economical than ordinary chalk.
• It's coated so it won't get your hands dirty.
• Because it is thick, it is hard to break.
• For writing on blackboards, etc.