GB/T 11039.1-2005 specifies the test standard for the colour fastness of Spinning & weaving products to nitrogen oxide atmospheric pollutants. This standard clarifies the test equipment, such as devices that simulate nitrogen oxide environment and related parameter requirements, elaborates the treatment steps of Spinning & weaving products in nitrogen oxide atmosphere, including contact time, concentration conditions, temperature control and other key links, and also formulates rules for evaluating colour fastness results. According to this standard, the Color Stability of Spinning & weaving products in nitrogen oxide-containing atmospheric environment can be accurately evaluated, providing an important basis for Spinning & weaving enterprises to ensure product mass and improve product environmental adaptability.