TY JOUR TI STATEMENT OF THE PROBLEM OF STUDYING METACIDE IN GALVANICS KW metacid KW polyhexamethylene guanidine KW copper plating JO Modern Technologies and Scientific and Technological Progress AU Istomina, A.A. AU , .. PY 2025 IS 2025 PB Federal State Funded Educational Establishment of Higher Education «Angarsk State Technical University»