No.18 Son Ha Minerals Co., Ltd are a leading manufacturer limestone powder and granular limestone at Vietnam. We have 2 factories and owned quarry. Our products:*Limestone powder: size from 80-250mesh, whiteness 88-90%*Granular limestone: size from 1-4mm, whiteness 85-88%Application: our products use to making poultry and fish feed, glass, terrazzo brick,..