Unverified80% confidenceDecision RuleTime unknown
廉价插座常用回收铜或铁片镀铜做插套，导电性差、易氧化发热，选购时可看插套是否为磷青铜/锡磷青铜材质，这是保证长期接触安全的关键
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80%
Confidence
Long-term
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