The flame retardant series is acid resistant, oil resistant, and weak alkali resistant, with excellent mechanical properties, good flame retardancy, wear resistance, good electrical properties and insulation, low moisture absorption, heat resistance, good perforation/tearing stability, and good thermal bonding performance with metals; This includes but is not limited to the above applications, which can be processed using die-cutting and cold pressing. The surface can be directly printed with hot stamping, aniline printing, offset printing, flat printing, photo concave/convex printing, and can also be laminated with metal foil to make high-temperature devices that resist electromagnetic interference. They are used for power system insulation, disk drive insulation, keyboard insulation, television/display insulation, and computer motherboard insulation.