GB/T 23343-2009 is the colour fastness test standard for Spinning & weaving products, focusing on oxidation bleaching reactions involved in resistance to domestic and commercial washing colour fastness. The standard specifies the use of phosphorus-free standard detergents containing low-temperature bleaching agents to simulate oxidation bleaching scenarios in actual washing. Spinning & weaving products are tested for colour fastness. The test process, detergent formula, washing conditions, etc. are described in detail. Color change of Spinning & weaving products in this specific oxidation bleaching environment is detected to evaluate its colour fastness, which provides an evaluation basis for Color Stability of Spinning & weaving products when washing with this type of detergent.