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[求助] 羟基丙烯酸聚氨酯面漆柔韧性为什么这么差? | 
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 努力 
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 学习,学习,再学习 
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 专业生产防腐油漆 涂料 制罐 覆膜铁 聚酰胺蜡粉 聚酰胺蜡浆 聚乙烯蜡浆 
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 UV树脂,弹性漆树脂13713085780 
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 A? 
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 书不记,熟读可记;义不精,细思可精。惟有志不立,直是无着力处 
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