The sealer P72-1 is a high-end environmentally friendly organic sealer used after electroplating zinc, electroplating nickel, trivalent chromium passivation, non-chromium passivation, or anodizing. Compared to ordinary alkaline sealers, it has the advantages of strong corrosion resistance, excellent chemical resistance, no alkali reaction, high gloss, and high hardness. The P72-1 sealer has high reaction activity and can exhibit excellent performance even at low curing temperatures (80℃).