The standard "GB/T 39685-2020 Test Method for Bonding Strength of Pottery and Porcelain Coatings" specifies the test method for detecting the bonding strength of Pottery and porcelain coatings by cross gluing specimens at room temperature. The standard details the requirements for the preparation of the specimen, the test mode, the loading rate, the data collection and the test report. It is suitable for Pottery and porcelain coatings coated on the surface of various materials, and Miscellaneous functional, protective, iconic or decorative coating materials can also be used for reference. The standard also cites related standards such as static uniaxial tester inspection, depth caliper and microscopy terminology to ensure the accuracy and reliability of the test.