The standard "GB/T 12333-1990 Metal cladding, engineering copper platings" specifies the technical requirements for engineering copper platings, including the scope of application, technical specifications and test methods. The standard applies to copper platings for engineering purposes, such as barrier layers for heat-treated parts, anti-wear layers for drawing wire processing, and copper platings for tin platings to prevent metal diffusion. The standard does not apply to decorative copper platings and copper platings for electroforming. It covers multiple aspects of platings such as film thickness measurement, adhesion strength testing, and quotes relevant standards to ensure the accuracy and conformity of the test.