Unverified85% confidenceDecision RuleTime unknown
承重需求高的场景（叠放5层以上或存放书籍/瓷器）应选PP材质且壁厚≥2mm、单箱静态承重标注≥50kg的款式，PET材质透明箱普遍承重仅15-25kg，堆叠3层以上易变形塌陷
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