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45号钢光板P20模具钢40CR精板DC53钢板H13毛料CR12MOV调质Q235铁
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模具钢材钢板CR12DC53CR12MOVH13
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45号钢板Cr12mov模具钢材P20精光板DC53铁板SKD11圆钢Q235加工H13
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Cr12mov模具钢材45号钢板P20精光板DC53铁板SKD11圆钢Q235加工H13
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