[KongchangAI]
Unverified80% confidenceTradeoffTime unknown

延保年限越长单价越高但边际保障递减:设备第3-4年进入元器件老化高发期,但届时产品残值已大幅下降,若计划2年内换新则第3年延保基本浪费

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80%
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Long-term
Relevance
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