Functional additives of our company’s calcined kaolin are applied in cable processing in quantity, particularly in PVC cables and EPDM cables. Products of our company applied in such filed shall be specially screened and pass through surface treatment, with such advantages as high volume resistance, good compatibility with basic material, good dispersibility, high pureness, and strong chemical inertness, so that cable insulation materials’ insulating property, mechanical property, processing rheological property, ageing-resistant performance, and acid and alkali resistance property can be enhanced effectively.