Unverified82% confidenceDecision RuleTime unknown
深色（藏蓝、深红）校服须确认色牢度≥3-4级，劣质染色首次水洗易掉色染白衬衫，可要求商家出示GB18401色牢度检测报告
1
Sources
82%
Confidence
Long-term
Relevance
-
First Seen
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Unverified深色/鲜艳色免烫衬衫看色牢度指标：耐水洗色牢度应≥3-4级，耐摩擦色牢度≥3级；藏青、深蓝等深色系与浅色衣物混洗易染色，建议前3次单独手洗88% similarUnverified深色衬衫要求色牢度4级以上（GB/T 3921标准），低于此值前3次水洗易掉色，深蓝和纯黑掉色最明显，购买时可查看吊牌摩擦色牢度标注87% similarUnverified深色/艳色免烫衬衫看色牢度标注，摩擦色牢度≥3-4级、水洗色牢度≥4级才不易掉色染白，浅蓝、白色等经典色最稳妥，深藏青初期建议单独洗87% similarUnverified深色(藏青/黑/深蓝)纯色衬衫慎选低价活性染色，易褪色泛白；认准'色牢度4级以上'标注，深色首洗建议单独冷水洗86% similarUnverified深色（尤其藏青、酒红、黑）polo衫务必确认色牢度≥3-4级，否则易掉色染白裤/内衣；首次单独冷水手洗，避免与浅色混洗86% similar
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