GB 11403-1989 focuses on the specification of polyamide standard lining fabrics in the colour fastness test of Spinning & weaving products. It defines the key elements of the lining fabric such as fiber raw materials, yarn characteristics, and organizational structure. Specific technical indicators such as fiber content, yarn thickness, warp and weft density are given in detail, and there are also requirements for the fabric Appearance mass. This standard provides a unified and accurate reference for the colour fastness test of Spinning & weaving products, ensuring the accuracy and conformity of the colour fastness test during the test, which is conducive to accurately judging the colour fastness performance of Spinning & weaving products in various environments.