GB/T 5714-2019 is a special test standard for seawater colour fastness of Spinning & weaving products, which is applicable to all kinds of Spinning & weaving products. The standard evaluates the degree of discoloration and staining of the lining fabric by immersing the combined sample composed of the sample and the lining fabric in a 30g/L sodium chloride solution (simulating the seawater environment), under specified pressure pressure and thermostatic treatment. The test requires the help of sweat-resistant colour fastness tester, thermostatic oven, Electronic Balance, with multi-fiber lining fabric, grey sample card or spectrophotometer (colorimeter) and other instruments to ensure the test specifications, and to provide a unified technical basis for mass control and colour fastness performance evaluation of sea-related Spinning & weaving products.