Recently, the national standard GB/T 20147.6-2026 "Colorimetry — Part 6: CIEDE2000 Color-Difference Formula" was officially released and implemented on April 30, 2026. This standard adopts the ISO/CIE 11664-6:2022 international standard with modifications and is under the jurisdiction of the National Technical Committee on Lighting and Electrical Appliances of the Standardization Administration of China. It serves as an important fundamental standard in the fields of colorimetry and color measurement.

CHNSpec (Zhejiang) Co., Ltd., as one of the main drafting units, deeply participated in the research and development of the standard. Relying on its technical accumulation in the fields of color difference detection and optical measurement, CHNSpec provided key support for the standardized application and implementation of the CIEDE2000 color-difference formula in China, helping the industry unify testing methods and improve measurement precision.