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3.3'.4.4'-Benzophenonetetracarboxylic Dianhydride

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3.3'.4.4'-Benzophenonetetracarboxylic Dianhydride 25g : 3.3'.4.4'-Benzophenonetetracarboxylic Dianhydride is a key polyimide precursor for high-temperature polymers. Its benzophenonetetracarboxylic dianhydride structure ensures thermal stability and chemical resistance.

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