ProcurementPolyimide monomers:2-(4-Aminophenyl)-1H-benzimidazol-5-amine（CAS:7621-86-5）99.9%min; 3,3",4,4"-Biphenyltetracarboxylic dianhydride(CAS:2420-87-3)99.5%min; ,4,4"-(Hexafluoroisopropylidene) diphthalic anhydride(CAS: 1107-00-2) 99.5%min; 4,4"-Oxydiphthalic anhydride(CAS:1823-59-2) 99.5%; Inhibotor 705（CAS:2122-49-8）95%min; 4-Cyano-2-methoxybenzaldehyde(CAS:21962-45-8) 98%min; 4-Amino-2-hydroxy-5-methylpyridine(CAS:95306-64-2) 98%min; Fertilizer:potassium nitrate(CAS:7757-79-1)
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