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国标GB/T 15551是桑蚕丝织物标准，正规真丝产品吊牌会标注该标准号及纤维成分含量；燃烧测试可辅助鉴别：真丝燃烧有烧毛发焦味、灰烬呈松脆黑球，化纤则结硬块有塑料味

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Unverified燃烧法辨别纤维：天然纤维（棉麻）燃烧有烧纸/烧头发味且灰烬松散呈灰白，合成纤维（涤纶/锦纶）燃烧熔缩成硬珠且有塑料刺鼻味，此法零成本但需破坏样布，仅适合边角料检测77% similar Unverified羊绒判别真伪可看'含绒量'标签（≥95%为纯羊绒）+燃烧测试（烧后灰烬易碎、有毛发焦味，化纤则结硬球）75% similar

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