Polyimide film (PolyimideFilm) is the world's best performance of thin film insulation materials, from PMDA and diamine diphenyl ether (ODA) in a strong polar solvent after condensation and casting film and then imide.

Polyimide has the highest heat resistance among the industrialized polymer materials, and has been widely used in high-tech fields as films, coatings, plastics, composite materials, adhesives, foams, fibers, separation films, liquid crystal orientation agents, photoresist, etc. In the late 1960s, China could produce polyimide films in small batches, which have been widely used in various fields such as aviation, navigation, spacecraft, rocket missiles, atomic energy, electronic and electrical industries.