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表面耐磨塑料 |
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點(diǎn)評
什么概念,就是鋼鐵四千左右一噸,鋁兩萬左右一噸,銅七萬左右一噸,錫二十二萬左右一噸。它奶奶這個能賣五十多萬一噸
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Archiver|手機(jī)版|小黑屋|機(jī)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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