| Number | Name | Grade | Features and uses |
| 1 | Polyimide ultrafine powder | SK-0131 | The glass transition temperature is greater than 260 ℃, which can be dissolved in polar solvent (NMP). The product can be used for interlayer toughening of high temperature epoxy and bismaleimide based carbon fiber composites. |
| 2 | Polyimide ultrafine powder | SK-0132 | The glass transition temperature is greater than 260 ℃, which can be dissolved in polar solvent (NMP). The product can be used for interlayer toughening of high temperature epoxy and bismaleimide based carbon fiber composites. |