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document.write('PU油墨连接料 | ');
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document.write('聚氨酯胶黏剂中的小分子硅烷类有机硅改性剂 | ');
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document.write('双组份水性聚氨酯中多元醇水分散体研究 | ');
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document.write('聚氨酯抗静电剂目前研究进展总结 | ');
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document.write('防过敏PU自粘绷带 | ');
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document.write('水性PU木器漆发展现状 | ');
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