4,4-Diaminodiphenyl sulfone, pyromellitic dianhydride, 3,3,4,4-benzophenonetetracarboxylic dianhydride polymer(CAS No.:95228-96-9)

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Product Name:	4,4-Diaminodiphenyl sulfone, pyromellitic dianhydride, 3,3,4,4-benzophenonetetracarboxylic dianhydride polymer
CAS NO.:	95228-96-9
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