Naphthalene-1,8-diamine 90%1,8-Diaminonaphthalene1,8-DIAMINONAPHTHALENE TECHNICAL GRADENaphthalene-1,8-diamine 99%1,8-萘二胺1,8-二氨基萘1,8-Naphthalenediamine1,8-Diaminonaphthalene1,8-DiaminonaphthaleneHFBA全氟丁酸酐七氟丁酸酐U - Heptafluorobutyric anhydridenaphthalene-1,8-diamineHFAA