... Food,Industrial,Medicine,Reagent Calcined Calcium CarbonateCaCO3 powder, Activity Calcium Carbonate, Active CaCO3 Powder.whiteness: 93-97%purity: 95-98% ... heavy calcium carbonate and light calcium carbonate, including active and inactive.The Heavy Calcium Carbonate is almost always ... , it is used for Antacid in the medicinal powder for stomach, Excipiment adhering the effective ingredients, Polisher ...