Kaolin is available in various purity grades, which directly affect its suitability for different industrial applications. High-purity kaolin, often used in pharmaceuticals and fine ceramics, contains minimal impurities such as iron oxide and other minerals that could alter its color or reactivity. Lower-purity kaolin grades are more suited to applications like cement and construction materials, where minor impurities do not significantly impact performance. Purity is a critical parameter as it influences kaolin's brightness, whiteness, and overall effectiveness in applications that demand minimal contamination.DB-80 is a high brightness, fine particle size and high radius-thickness ratio calcined kaolin. It has moderate oil absorption, good matting effect and good opacity. As a good titanium dioxide extender, DB-80 incorporates readily into solvent-based and water-based coatings, where it replaces titanium dioxide partially and reduce production cost, provides excellent dry opacity and tinting strength for paint film.