I never of the brand before, and I wondered when the company started.  I went to Scalemates.com, to see what might be posted there.  Here are the results of a search there on "dnepro":

https://www.scalemates.com/search.php?fkSECTION[]=All&q=Dnepro+Model

The most recent release date I see in those results is 2017, and given the Russian invasion, it's possible that they're no longer in business. Though, there are Ukrainian model companies that managed to continue to operate as the occupation goes on.

I just found the manufacturer's page in Scalemates, https://www.scalemates.com/brands/dnepro-model--2126, and there is a kit listed there, a barrage balloon, with a 2021 release date.  Now, Scalemates is a wiki, so the info is as good as what members post there, but I think it's probably likely that they were operating up to 2021, and may still be.  I'd have to run some web searches next to see what comes back.

If you haven't yet looked, you might want to look, too, at Hyperscale.com, Cybermodeler.com, and FineScale Modeler, at the new product sections.  I'm sure others will know more, or also have suggestions about where to look.

Hope that helps!