... Metal Expansion Screw 金属膨胀螺丝 Stainless Steel Expansion Screw 不锈钢膨胀螺丝 Expansion of the screw 膨胀螺丝 ...
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Fixed frame: 304 stainless steel, fixed to lab roof with M12 expansion screw.
固定架：304不锈钢材质，用m 12膨胀螺钉固定于实验室屋顶。
Stainless steel screw, hex bolt series: tighten screw, machine screw, nail screw, self-tapping screw, expansion bolts, carriage, lifting eyebolt, a tooth, flat mat, play split cotters cushion etc.
不锈钢螺丝系列：内六角螺栓，紧钉螺钉，机螺钉，自攻钉，马车螺丝，膨胀螺丝，吊环螺丝，牙条，开口销，平垫，弹垫等。
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