FIELD: electrotechnical materials. SUBSTANCE: invention relates to chemical and galvanic metallization of dielectrics and, in particular, to preparation of their surface for applying nonmetal conductive coatings, protective-and-ornamental and functional metal coatings and may be employed in radio, electrotechnical, instrumentation and mechanical engineering. Invention consists in that solution for preliminary preparation of surface of plastics contains 17.34- 19.20 mol/l of sulfuric acid and 0.007-0.080 mol/l of potassium iodate. EFFECT: facilitated manufacturing of electrotechnical parts. 1 tbl
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