The provided fluorine-free waterproofing agent FCB48, some customers said that chicken claw marks will appear during use. For this reason, the advice of engineers from our technical department is: first, determine the water absorbency of the fabric and whether it is completely soaked; based on this condition , you can add a small amount of wetting agent to help penetrate and make it soak evenly; wash the fabric thoroughly before making it waterproof; and when preparing the working fluid, in order to avoid flocculation of the working fluid, adjust the PH value of the water to 6~6.5, it is recommended to use deionized water for preparation.
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