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绞刀5.795.75合金5.72钨钢5.745.785.765.71铰刀5.775.73
硬质钨钢球合金球5.795/5.8/5.805/5.81/5.815/5.82/5.825mm钢珠
钨钢球合金球5.795/5.8/5.805/5.81/5.815/5.82/8.825/5.83mm钢珠