The GB/T 12600-1990 standard specifies the requirements for Eletroplating copper + nickel + chromium platings on plastics suitable for various conditions of use. The standard applies to Eletroplating copper + nickel + chromium platings on plastic substrates, as well as Eletroplating nickel + chromium platings. The standard includes detailed provisions on the classification, thickness determination, Appearance requirements, bonding strength and corrosion performance of platings, aiming to ensure the Stability and performance of platings in different use environments. In addition, the standard also includes the thermal cycle test of platings and the corresponding classification of use conditions, providing the necessary guidance and standardization basis for production and application.