Section 05 Mineral products 25 Salt; sulphur; earths and stone; plastering materials, lime and cement 25 07 Kaolin and other kaolinic clays, whether or not calcined 25 07 00 Kaolin and other kaolinic clays, whether or not calcined. Commodity Code Description 25 07 00 00 Kaolin and other kaolinic clays, whether or not calcined.