This standard specifies the terms and definitions, product structure, requirements, test methods, detection rules and marking, Encasement, storage and transportation of high reflectance silver reflection films. It is applicable to single-sided silver reflection films and double-sided silver reflection films. A series of necessary standard documents are referenced, such as Encasement storage and transportation diagram logo, Measuring method of object color, etc. The terms and definitions section defines terms such as high reflectance and reflectance uniformity change rate to ensure conformity and accuracy of terms in the document. The product structure section provides a schematic structural diagram of high reflectance silver reflection films.