Polyimide F46 compound film have synthesized the characteristic of polyimide film and fluorine plastics,and endure the different temperature and the electronic radiation.It can be melted and shaped at 300 - 350c. Its insulation heat-resisting grade is level H,and it can be used in the temperature ?269C~+260C for a long period. It's extensively suitable for insulation layer of wire, cable and electromagnetic line as well the insulation for various H~C grade motors.