[KongchangAI]
Unverified75% confidenceFactTime unknown

反复使用次数与拉链和阀门材质相关:普通PE阀门反复抽气约20-30次后密封失效,硅胶单向阀+加厚拉链可达50次以上;频繁换季使用应选可更换阀门或带阀门保护盖的款式

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