17 Semi-worked synthetic plastic as semi-finished products in form of pellets, foils, foams, fibers, films and sheets; plastics in extruded form for use in further manufacturing; acoustical insulation barrier panels; insulating materials; glass fiber reinforced plastics for use as insulation in building panels, construction elements, elements for electrical and mechanical devices, vehicles, ships and planes; semi-finished plastics in the form of laminated or reinforced sheets, tubes, shaped sections or blocks for use in further manufacture in the electrical, electronic and mechanical engineering industry; electrical insulators; synthetic plastic and glass fiber mixtures as semi-finished products in the form of tubes and shaped sections for use in further manufacture in the electrical and electronic engineering industry; electrical insulators; mixtures of plastic and glass fibers in the form of tubes and shaped sections for use in further manufacture in the electrical and electronic engineering industry; plastic materials in form of panels, specifically, plastic laminated panels for use in the manufacture of tabletops; moldable unprocessed plastics in the form of resins, being hardened on exposure to heat; gutta-percha; elastic partly processed gum; balata; semi-worked rubber and rubber substitutes in the nature of synthetic rubber for use in the manufacture of tires, cable, paper; semi-processed plastic in the form of sheets, plates; packing material for forming seals; door and window stops of rubber; insulating materials; asbestos; mica; flexible tubes, not of metal; plastics in extruded form for use in further manufacturing; electrical insulating boards, panels and molded electric insulating parts of electrical apparatus; electrical insulating board for use in connection with electrical control panels transformer spacer sticks and support insulators; glass fibers for insulation