
还有这个,我也知道,这个叫膨胀螺丝 吊杆.

吊顶吊杆新风系统配件固定新风机浴霸 安装螺纹吊杆膨胀螺丝
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吊顶配件丝杆件套锥母膨胀胀管组合集成晾衣架内置式膨胀螺栓

空心砖膨胀螺栓304不锈钢加长膨胀螺丝超长吊顶膨胀螺栓晾衣架膨胀
图片内容是:吊顶膨胀螺丝安装

304不锈钢加长膨胀螺丝膨胀螺栓衣架空调风管吊顶膨胀m6m8m10m12

镀锌吊顶专用鱼鳞拉爆膨胀螺丝连体内膨胀螺栓组合壁虎m6/m8/m10

定做304不锈钢加长膨胀螺丝超长吊顶膨胀螺栓晾衣架膨胀螺丝m103003个

膨胀螺钉螺丝固定混凝土天花板木龙龙骨螺栓底座膨胀螺丝

吊顶配件,膨胀螺丝