The standard "GB/T 36979-2018 LED Product Spatial Color Distribution measurement method" specifies the representation of Color parameters of white LED lamps, white LED modules and white LED luminaires and the measurement method of spatial Color distribution. The standard applies to white LED products for lighting, but does not include LED packaging and OLED products. The standard defines accurate methods for Color measurement, including measurement techniques for average Color and spatial Color distribution, designed to ensure the conformity and accuracy of Color performance of LED products. The relevant measurement methods and standards refer to the international chroma standard to support accurate Color evaluation and color rendering characteristic testing of light sources.