kaolin has two types: calcined kaolin and metakaolin. the difference betwen it is process. The individulity: High refractoriness and stability,Physicochemical stability, Low porosity. Bulk density high, Low impurity content and so on. using: calcined kaolin and metakaolin all can be widely used in Papermaking Industry,Coating Industry, Oil and Paint Industry, Rubber Industry, Plastic Industry, PVC Industry, Ceramics, Cable Industry and so on.