Unverified75% confidenceFactTime unknown
色牢度按GB/T标准分1-5级，4级以上为合格耐洗，深色校服建议选耐水洗、耐摩擦色牢度均≥4级的产品，否则易掉色染白衣或退色发旧
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75%
Confidence
Long-term
Relevance
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Unverified色牢度选4级以上（GB/T标准），深色系（藏青、酒红、墨绿）尤其要看色牢度，否则首次水洗掉色、贴身睡易染皮肤85% similarUnverified颜色耐洗性判断：正规品牌会标注耐水洗色牢度≥3-4级、耐摩擦色牢度≥3级，儿童衣物出汗多、洗涤频繁，色牢度低于3级易褪色掉色污染皮肤85% similarUnverified机洗领带务必确认色牢度≥4级（GB/T或AATCC标准），深色（藏蓝、酒红、黑）与浅衬衫混洗易染色，低色牢度产品应单独手洗或装入网袋分色洗84% similarUnverified国标GB/T 22849对色牢度分级，机洗耐水洗色牢度达到3-4级以上基本不明显掉色染他物；正规品牌吊牌或质检报告会标注该指标84% similarUnverified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84% similar
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