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钳口优质碳钢锻压，表面钝化处理，齿部高频，齿部硬度 55-60HRC， 球墨铸铁柄，把柄头部双侧带双眉线。
Mobile jaw drop forged with high quality carbon steel,heat treatment with quench and tempering, hardness of teeth is 55-60HRC, globular graphite cast iron handle with eyebrow line on both sides.
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