Unverified78% confidenceFactTime unknown
真空保温结构（不锈钢真空层）保温效果远优于发泡材质，但成本高、重量大、容量做不大，市面真空保温桶多在3-6L区间，10kg级大容量基本采用发泡而非真空
1
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78%
Confidence
Long-term
Relevance
-
First Seen
Sources
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