Heavy& Ground CaCo3 1.Product Introduction: Natural heavy calcium carbonate selects natural,snow-white calcite as raw material,and processes through domestic advanced grinding equipment and foreign sorting equipment.Which is produced strictly according to ISO9001 Certificate of international quality management system,It is an all-purpose filler materials due to identical grain size,stable lustre,and excellent dispersion. 2.Technical Parameter: Name & Parameter Model Specification Item Natural Heavy Calcium Carbonate