Black Polyimide Film manufacturer / supplier in China, offering High Purity Refined 4, 4′-Diaminodiphenyl Ether, Oda, 4, 4′-Oxydianiline with CAS 101-80-4, Refined Pmda Crystal Fine Powder, High Purity Pyromellitic Dianhydride with Free Acid Content 0.1%-0.3%, 99.8% High-Purity Pyromellitic Dianhydride C10H2O6, Refined Pmda with CAS 89-32-7 and so on.
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