Unverified75% confidenceFactTime unknown
天然乳胶密度75-85kg/m³支撑与耐久平衡最佳，低于60为高发泡偏软易塌，高于90偏硬失去乳胶回弹优势；选购可要求查看乳胶芯含量证明
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75%
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Long-term
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