We believe that limestone is the most important factor to get the best quality of Calcium carbonate powder. Understanding this matter, We have already surveyed, checked and tested a lots of marble quarríe in Mong Son, Luc Yen, estimate the best in Vietnam and Southeast Asia. We use material from some our limestone quarries: YBB, Van Khoa, Chan Thien My, Hung Dai Vuong. It marbles content 98.5% CaCO3, whiteness 98.5%, brightness 96%. Its chemical composition and physical properties can meet the demand of many industries.