Now We produce three types of polyimide film for different useinformation as follows:H" type: simple polyimide film backing material for pressure sensitve tape or other insulation materials"v" type: polyimide film after surface treated suitable for flexible printed circuit ,voice coil and other special demartpment which requires good peel strength."F" type: Compound film (FH.FHF) is single or double covered with F-46 used for insulation for wire cable and electronmagnetic wire.