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进口SKD61CR12MOVDC53 4CR13 SKD11 H13模具钢S136H圆钢板材P20材
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进口SKD61CR12MOVDC53模具钢S136H 4CR13 SKD11 H13圆钢板材P20材
模具钢材s136h圆棒45号钢 CR12MOVDC53圆钢718H SKD11 P20 NAK80
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模具钢材45号钢板H13料光圆棒Cr12movdc53模具钢SKH9p20光NAK80
精密模具钢板S136HP40NAK80Cr12moVDC53硬料CR5MO1V4340圆棒
模具钢材45号钢光板H13圆棒CR12movdc53SKH9高速钢P20SKD11精
模具钢材45#号钢板圆棒CR12MOVDC53P20H13S136模具材料加工
