Founded in 1999, JAMMARK INTERNATIONAL TRADINGE(ZIBO) CO., LTD. is a professional manufacturer of pyromellitic dianhydride and pyromellitic acid, has 20 years of production and sales experience, the products are exported to overseas.

Pyromellitic Dianhydride(PMDA)is a key raw material for high-performance polyimide(PI)materials.Thanks to its high purity and stable reactivity,PMDA is widely used in the production of the following PI products:
●PI Resin-for high-temperature resistant composites,structural parts,adhesives,and engineering plastic modification
●PI Film-used in flexible printed circuits(FPC),electrical insulation,lithium battery packaging,and aerospace electronics
●PI Slurry-applied in wire enameling,electronic protective coatings,and semiconductor encapsulation
●PI Foam-for thermal insulation materials,flame-retardant components,and lightweight aerospace structures
●PI Fiber-suitable for high-temperature filtration,protective textiles,and industrial reinforcement materials
●Photosensitive Polyimide(PSPI)-widely used in semiconductor packaging,wafer-level processing,and advanced microelectronics
High-quality PMDA ensures consistent molecular structure,controlled acid value,and excellent thermal stability of downstream polyimide products,directly improving product performance and production yield.