1731| 3
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特種不銹鋼S3P處理 |
點評
不銹鋼可以滲氮啊,提升硬度和耐磨
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Archiver|手機版|小黑屋|機械社區 ( 京ICP備10217105號-1,京ICP證050210號,浙公網安備33038202004372號 )
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