Plastic semi-worked products, namely, semi-worked synthetic plastic as semi-finished products in the form of pellets, rods, foils, foams, fibers, films and sheets; plastic composite material, including fiber-reinforced plastic, in the form of boards for use in manufacturing; synthetic plastic as semi-finished products in the form of plates; metalized plastic sheets, including plastic sheets with metal foil, for use in the manufacture of electronic circuits, electrical circuits, antenna and filters; laminate foil consisting primarily of plastic with or without a metal foil for application to a substrate; laminated boards of plastics for use in the manufacture of electronic circuits, electrical circuits, antenna and filters; fiber-reinforced boards of synthetic plastic as semi-finished products in form of foils, plates, rods, profiles, hoses, tubes, blocks; semi-processed synthetic resins; semi-processed plastics; polymer films for use in the manufacture of electric/electronic circuits; electronic circuit and antenna material, namely, an insulated dielectric substrate material which is clad on one or both sides with a conductive layer for fabricating electronic circuits and antennas; pre-impregnated adhesive polymer film and bonding polymer film used for manufacturing electronic circuits; electronic/electrical circuit board materials having a low dielectric constant, namely, an insulated dielectric substrate material which is clad on one or both sides with a conductive layer for fabricating electronic/electrical circuit boards; electronic/electrical circuit board materials having a low dielectric dissipation factor, namely, an insulated dielectric substrate material which is clad on one or both sides with a conductive layer for fabricating electronic/electrical circuit boards; laminates in which one or both sides of low-dielectric constant electrical/electronic circuit materials are covered with a cupper foil for fabricating electronic circuits; laminates in which one or both sides of low-dielectric dissipation factor electrical/electronic circuit materials are covered with a cupper foil for fabricating electronic circuits