7274| 5
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做一個比較小的尼龍件的注塑模具用什么材質(zhì)的模具鋼,? |
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小黑屋|手機版|Archiver|機械社區(qū) ( 京ICP備10217105號-1,,京ICP證050210號,,浙公網(wǎng)安備33038202004372號 )
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