Unverified75% confidenceFactTime unknown
沙发床整体承重通常标注150-300kg，实心木框架比板材框架耐用，铁艺展开机构选加粗方管（≥1.5mm壁厚）比薄壁圆管抗变形，双人频繁使用需关注机构耐久
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