Getting back on topic, Russia historically didn't have a real civilian industry (which is one of the reasons the USSR failed). String quality, especially for electric instruments, was nowhere near the top of their concerns. Anecdotally, strings in the Eastern Bloc were dire, but I am wary of any info on the matter because there is and was a certain interest in making the Communists (and then, the Russians) look bad, and the people themselves will have likely exaggerated their complaints since, well, unhappy people tend to be critical just because. (Maybe the strings were bad but not *that* bad). When the USSR fell, they had both access to better products and they were in a very bad place, and when they sort of started getting their poopie together in some way, China was leaps ahead of Russia as a manufacturer, and it made (and still makes) very little sense for Russians to invest in large-scale manufacturing of niche products. I suppose their string manufacturers' only reason to be, up to the present day, is to make specialty strings for specialty Russian instruments that are not so commonly found elsewhere.