SJ 20443A-2018 "Specification for rhodium platings" is a standard issued by the China Association for Standardization, which mainly stipulates the technical requirements and detection methods of rhodium platings in industrial applications. The standard details the requirements for physical and chemical properties such as thickness, surface morphology, corrosion resistance of rhodium platings, including specifications for testing equipment and test steps. It is suitable for various products, such as high-precision instruments, decorative parts and industrial parts with high corrosion resistance requirements. It aims to ensure the mass stability and reliable performance of rhodium platings, and improve the service life and market competitiveness of products.