"TCVN 11665-2016 Fine Pottery and porcelain (Advanced Pottery and porcelain, Advanced Industrial Pottery and porcelain). Rockwell indentation test for evaluating Pottery and porcelain coating adhesion" is a standard issued in Vietnam, which stipulates the use of Rockwell hardness tester, by indentation crazing to qualitatively evaluate Film thickness of not more than 20 microns Pottery and porcelain coating adhesion test method, including principles, equipment, sample preparation and test reports. The standard is applicable to fine Pottery and porcelain, Advanced Pottery and porcelain, Advanced Industrial Pottery and porcelain and other fields, Pottery and porcelain coating adhesion detection provides a scientific and unified basis, help to improve product mass and performance, to ensure the reliability and durability of coatings in practical applications.