东岳氟硅科技集团有限公司-爱游戏app官网

3,3’,4,4’-benzophenonetetracarboxylic dianhydride(btda)
 

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shandong huaxia shenzhou new material co., ltd.

domestic sales office:0533-8519966

e-mail:15553327277@huaxiashenzhou.com

foreign sales office:0533-8521777

e-mail:wakiezhou@huaxiashenzhou.com

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