I was bored and had a bit of a look around.

https://www.vonhaus.com/vh_en/blog/vonhaus-who-we-are- Might be worth checking where their glass products are manufactured.

https://eu.josephjoseph.com/

https://www.status-innovations.eu/

https://www.bormioliluigi.com/glassware/en/company-who

https://www.kuhnrikon.ie/about-kuhn-rikon/

Unsure about these https://vilde.pl/en/about/about-us-57

Yeah, I was wondering if any of those companies sell to consumers.

Not sure if this helps, but

https://feve.org/about-us/feve-members/