We are Kego Company Limited based in Vietnam - a reliable supplier of Ground Calcium Carbonate (CaCO3). It is being increasingly used in many applications such as: paper, paint, plastics, ceramic, crystal, animal feed, medicine, food production. For your information, our CaCO3 powder is made of stones exploited form quarries in Yen Bai province, which is one of the highest sources comparing in Vietnam as well as in the world. We are sure that you will be satisfied with our products thanks to their high purity and brightness. We can guarantee that our products can meet strictest requirements for worldwide exports. Physical Analysis Chemical Analysis Whiteness: 98% min CaCO3: 99.46% min Brightness: 96% min Fe2CO3: 0.01% max Hardness: 3 Moh MgO: 0.02% max Moisture: 0.2% SiO2: 0.03% max Oil absorption: 23g/100g CaCO3 Al2O3: 0.02% max Density: 2.65-2.7g/cm3 pH: 8-9