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[分享] 户外墙体屋顶涂料用什么碳黑比较好啊? |
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Degussa碳黑代理:特黑250,FW200,灯黑101/导电/NEROX系列/U碳等 EBS/油酸/芥酸酰胺 陈先生13503095216 新号
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