Unverified75% confidenceDecision RuleTime unknown
看密度而非仅看厚度：优质XPE密度较高按压后回弹快、不留深压痕；劣质发泡垫看似厚但一压塌陷、恢复慢，长期承重后局部永久变形失去缓冲
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75%
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