THESE PRIMERS ARE PRIMARILY USED IN INDUSTRIAL WORK.ZINC CHROME PROVIDES THE CORROSION INHIBITING ACTION.THE POWERFUL OXIDISING PROPERTY OF THE CHROMATE ION OXIDISE FERROUS IONS TO FERRIC OXIDES ON THE ANODE SURFACE AND SIMULTANEOUSLY COMBINATION TAKES PLACE TO FORM AN ADHERANT FERRIC/CHROMATE COMPLEXES.THIS SEALS THE ANODIC AREAS AND RETARDS CORROSION.