This standard specifies the Cupping test method for Paints and varnish to evaluate the resistance of coatings to impact or sudden deformation. The test evaluates the impact performance and adhesion of coatings by applying a certain force to the coating using a standard cup-shaped pressure tool to observe whether the coating is crazing, disbonding or Miscellaneous damage. The standard details the test equipment, sample preparation, test procedures and the determination criteria for the results, ensuring the standardization of the test process and the Reliability of the results. The test is suitable for paint manufacturers, quality control laboratories and research institutions, and helps to evaluate the durability and adaptability of coatings. It is widely used in automotive, construction, home appliances and other fields. Cupping tests can predict the impact resistance of coatings in actual use, thus guiding product improvement and optimization.