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Industry Insights · 2026-10-26
Water Repellency Testing: How AATCC 22 Scoring Differs from ISO 4920 Grading, and Which to Specify
Water repellency is reported on two incompatible scales. This article explains the scoring logic behind AATCC 22, ISO 4920 and GB/T 4745, and what fluorine-free C0 finishing actually achieves.