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During peak seasons or when the fabric is in high demand, prices tend to rise During peak seasons or when the fabric is in high demand, prices tend to risecotton crepe fabric price. Conversely, during off-seasons or surplus situations, prices may drop to encourage sales. Fashion trends also sway demand; if cotton crepe is a trending fabric, its price could increase due to increased purchasing.
3. Staining of washing liquid
For the rating of staining of washing liquid after soap washing test (refer to FZ/T 73020-2019), the rating should be completed within 15 minutes after the test. After removing impurities from the soap liquid, pour it into a colorimetric tube, use the unwashed soap liquid with the same test temperature as the reference sample, and use the staining gray card to evaluate the staining degree of the washing liquid under D65 light source and white cardboard as the background.
