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[求助] 氨基烤漆配聚酯树脂如何增加柔韧性增加附着力 |
100普通分
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微电13828026761,Q2094027619
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环氧增韧剂特殊环氧QQ1042634015
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QQ397974983,手机13920650977
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醛酮,醛树脂,18753117216
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