GB/T 8436-1998 stipulates the test standards for temperature resistance and acid felting colour fastness of Spinning & weaving products. The standard specifies the configuration method of the acid solution required for the test, elaborates the specific process of felting Spinning & weaving products under mild acidic conditions, including key links such as temperature and time control, and formulates standardized result evaluation criteria. Testing according to this standard can accurately evaluate the Color Stability of Spinning & weaving products under mild acidic felting process, providing a key basis for Spinning & weaving enterprises to control product mass and optimize production process, and ensure that related products meet mass requirements.