3225| 9
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[求助] 有什么炭黑用在聚酰胺体系又黑又亮 |
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炭黑、气硅、OB 18924591964
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厂直销:色浆专用环保炭黑 ,色
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炭黑、气硅、OB 18924591964
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工作就是战斗!
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专业从事水性工业漆应用开发有空常联系,13316308788
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