Unverified90% confidenceFactTime unknown
核心价值是极致便携性——可挂钥匙扣或放入钱包随身携带，解决的是'愿不愿意口对口'的心理障碍而非专业级防护
1
Sources
90%
Confidence
Long-term
Relevance
-
First Seen
Sources
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