GB/T 45921-2025 "Organic Electrical Discoloration Sandwich Glass for Buildings" specifies the technical requirements, test methods, inspection rules, Encasement and transportation of this type of Glass for buildings. This kind of Glass combines organic electrical discoloration materials and sandwich structures, and has the characteristics of adjustable light and color. The standard provides a unified basis for product production, inspection and application, helps to ensure the performance and safety of architectural Glass, and promotes the standardized application of related technologies in the construction field.