This is first I've heard of Ginex, I agree that packaging looks
A bit of Googling shows Graf & Sons offered Ginex primers at one point and their product images show primer trays FWIW. Customer reviews are mixed.
https://www.grafs.com/unis-ginex-primers
WRT former Yugoslavia and ammunition and component manufacturers I'm aware of Igman in Bosnia - Herzogovina in addition to Prvi Partizan in Serbia, I hadn't heard of Genix previously. I see the Genix primers say they're manufactured in Bosnia - Herzogovina. A colleague of mine in Croatia has a very low opinion of Igman products, dunno if Genix brand is manufactured at the same plant as Igman.
I've seen a favorable review of Prvi Partizan component primers in an article written by a European competitive shooter evaluating various component primers, I'd personally welcome PPU component primers being available at retail in the USA.
http://www.targetshooter.co.uk/?p=2662