Black Polyimide Film manufacturer / supplier in China, offering High Quality Refined Pyromellitic Dianhydride for Making PVC Plasticizer, Polyimide Monomer, Dye and Other Derivatives, Pmda, CAS 89-32-7, Qualified Pyromellitic Dianhydride, Pmda C10H2O6 Used for Making PVC Plasticizer, Pyromellitic Dianhydride with Quality Report COA, High Class Fine Pmda Crystal Powder and so on.
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