Unverified82% confidenceCautionTime unknown

石膏板墙、瓷砖墙、空心砖墙不能直接用普通膨胀螺丝固定重型洞洞板，需用专用中空墙锚栓或飞机螺丝，否则脱落砸物风险高

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82%

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Long-term

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