Can be used for playgrounds, schools, club activities, circles, competitions, practice. Harmless to the human body. Will not cause rashes or pains. Can be stored for a long time. Provides smooth line draw. It has a lot of adhesion to the ground. Maintains high whiteness CaCO3 (Calcium Carbonate) 98.00% MgO (Magnesium Oxide) 0.60% Aluminum Oxide 0.15%