The national standard of "GB/T 23444-2024 Metal and metal composite ceiling panels" stipulates the classification, code, marking, raw materials, requirements, test methods, inspection rules and signs, Encasement, transportation, storage and accompanying documents of ceiling panels. It is suitable for public and commercial building decoration ceiling panels, including metal ceiling panels and metal composite ceiling panels and other types. The standard details the technical requirements of ceiling panels, such as Appearance mass, dimensional deviation, film thickness, etc., and provides corresponding test methods. The standard will be implemented on May 1, 2025, replacing GB/T 23444-2009.