1.Inertiaprotectivelayercouldbeformedonthepassivationsurface.Highcorrosion-resistanceandheatendur
1.Inertia protective layer could be formed on the passivation surface. High corrosion-resistance and heat endurance. The color of passivation layer won't fade. To be able to bear salt mist more than 200 hours
2.Nice adhesive force, excellent extensibility, self preparing function to the trivalent chromium passivation layer could be improved, contains no hexavalent chromium.