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SK85 SK95冷作合金工具钢 X20CrMo13圆钢145Cr6 140Cr2钢板
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145Cr5 2379冷作模具钢1.2379 K340钢板 DC011 35CRMO8圆钢
海泰科技防松止退帽R-M145*3.0P
海泰科技防松止退帽F-M145*2.0P
