[KongchangAI]
Unverified85% confidenceSolutionTime unknown

购买食品保鲜膜的完整决策路径:先按接触食物类型定材质(油脂/加热选PE、易氧化熟食选PVDC、仅果蔬可选PVC)→再按食材呼吸性选透气或阻隔→按使用频率选切割方式和规格→最后核对食品级认证标准

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