GB/T 11039.3-2005 "Spinning & weaving products colour fastness test, resistance to atmospheric pollutants colour fastness - Part 3: Atmospheric ozone" specifies the test method for determining the resistance of Spinning & weaving products to atmospheric ozone under different environment conditions. The standard corresponds to ISO 105-G03:1993 and covers the colour fastness test of Spinning & weaving products exposed to ozone in room temperature, low humidity and high temperature and high humidity environments. The ozone resistance of samples is assessed by comparing the fading of the control master standard. This standard replaces GB/T 11041-1989 and has been updated and improved in terms of sample size, test Environmental requirements and procedures to ensure more accurate and scientific testing of Spinning & weaving products under atmospheric ozone.