GB/T 7568.6-2002 is a standard on the specifications of silk standard lining fabrics in the colour fastness test of Spinning & weaving products. The standard specifies in detail the specifications of silk lining fabrics used for colour fastness testing, including fiber raw materials, yarn specifications, fabric structure, Appearance mass, etc. These specifications are designed to ensure that the silk lining fabrics can provide a unified and reliable reference in the colour fastness test, so that the test results of different laboratories and batches can be comparable. This lays the foundation for the accurate assessment of the colour fastness of Spinning & weaving products and helps the Spinning & weaving industry to carry out mass testing.