Our Calcium Carbonate ( CaCO3 ) has an average 95% brightness that is exclusive to our company. We offer only the finest mesh from 100 to 1200 ( 250 to 10 microns ). It is extensively used as the main ingredient in various industries such as PVC, paper & pulp, consumer products, agriculture and water & waste treatments. Our Calcium Carbonate is also an essential green ingredient to help save the environment from daily pollution and global warming.