GB/T 41415-2022 "Determination of the dimensional change rate of Spinning & weaving products under dry heat and humidity conditions" specifies the measurement method of the dimensional change of Spinning & weaving products after treatment under dry heat or heat and humidity conditions. Applicable to all kinds of fabrics and their products, the standard covers the steps of sample moisture adjustment, marking, measurement of initial size and size change after treatment. In the test, Spinning & weaving products are dampened under standard atmospheric conditions and treated at a specified temperature Humidity and time, and then the dimensional change rate is calculated through the size change before and after measurement. The standard also specifies the requirements of water and oven for testing to ensure the accuracy of the test.