The problem I have with FPP, while I wouldn't go so far as to call them dishonest, is they certainly want the consumer to believe things that are not factual. If you read the wording on their website, you'll believe Svema lives, happily going full steam ahead manufacturing their own emulsions in Ukraine. That Svema Color 125 is some mysterious, exotic, hitherto unknown Eastern European C41 film when in reality it is believed to be very domestic Kodak Aerocolor, not mysterious at all. It's just respooled by Astrum in Ukraine, FPP buys a few bulk rolls from Astrum and respools onto 35mm cassettes.
As for their newest Derev Pan marketing nonsense, if you look at the Wikipedia article the OP links, Tasma in Russia offers film in ISO 100, 200 and 400 with specs that sound suspiciously like what FPP describes for Derev Pan. True, Russia and Ukraine are different countries (well, maybe Vlad doesn't think so), but given FPP's willingness to play loose with the facts, it wouldn't surprise me if the films are the same.