Partially processed plastics; molded parts made of plastics, in particular of polyimides; plastics, in particular made of polyimides, in the nature of sheets, film, blocks, rods, tubes, pipes and hoses; plastics, in particular made of polyimides, in extruded form for production purposes; sealing, packing and insulating materials made of plastics, in particular of polyimides; polyimide films; polyimide fibers; polyimide sheets; polyimide films; extruded polyimides; polyimide granules; polyimid...