楼主: hongxiu
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[求助] 做木漆的封闭底漆,用乙醇溶解PVB后,单宁酸还有沉淀,是什么原因,请高手指导,谢谢 |
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微电13828026761,Q2094027619
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微电13828026761,Q2094027619
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微电13828026761,Q2094027619
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微电13828026761,Q2094027619
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