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外六角螺栓
@sina_535552219212-11-2014

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外六角螺栓的知识/六角螺栓的知识

 外六角螺栓、规范件、紧固件广泛应用于各种机械设备、电子商品、通讯设备、家私设备、建筑业等作业的出产、设备、修补。  外六...more

外六角螺栓

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