The "GB/T 32022-2015 Precious Metal Overlay Jewelry" standard specifies the terms, definitions, product classification, general requirements, test methods and marks, Encasement, handling and storage requirements of precious metal overlay jewelry. The standard applies to jewelry with non-precious metals (gold, silver, platinum, palladium, rhodium, etc.) as the substrate and using precious metal overlay, such as gold overlay jewelry, silver overlay jewelry, etc. For precious metal overlay jewelry with Non-metallic as the substrate, this standard can be implemented with reference to this standard. The standard refers to relevant test methods and requirements, including adhesion strength test, corrosion test, overlay Film thickness measurement and harmful element limit regulations, providing a comprehensive technical basis for the quality control of precious metal overlay jewelry.