The ISO 6860-2006 standard specifies a test method for evaluating the crack resistance and adhesion of Paints and varnishes under bending conditions. The method uses conical mandrel bending testing, which is suitable for detecting whether coatings are cracking or peeling off the substrate when bent. The standard applies to testing of single and multi-coating systems, and adjustments have been made to the Aluminum Panel rolling direction and cone diameter in technical revisions to ensure conformity with the ASTM standard. This standard provides a reliable way to evaluate the performance of coatings in practical applications.