Polymer, polyimide monomers, high-performance material monomers, polyimide and colorless polyimide film monomers, alignment layer monomers, optical film and aeronautical material monomers, specialty dianhydride and diamine, oled/opv/psc/ materials and intermediates, chemicals for organic light emitting materials, aniline derivatives, fluorene derivatives, carbazole derivatives, anthracene derivatives, naphthalene derivatives, phenanthrene derivatives, pyridine derivatives, hole transport material, electron transport material, fluorescent material, opv donor materials, opv acceptor materials, perovskite solar cell material, new energy materials, specialty chemicals, fine chemicals, chiral catalysts, paint coating, auxiliary agent, water treatment, cosmetic materials, food additives and plant extract, other organic intermediates.
