Unverified90% confidenceDecision RuleTime unknown
石膏板墙面不能直接用膨胀螺丝固定，必须先定位龙骨（金属或木龙骨）打孔，或改用石膏板专用飞机型膨胀塞，否则受力时螺丝会连墙皮一起拔出
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