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Düsseldorfer Künstlerkreis Spektrum76 eV - www.spektrum76.com
- Kunst in der Stadt Haan https://kunst-in-der-stadt-haan.de
- Bullseye Glass Co. Manufacturer of colored glass for art and architecture www.bullseyeglass.com
- SCHOTT glass made of ideas www.schott.com
- OCEANSIDE Glass & Tile http://www.glasstile.com
- Kunsthandwerkermärkte https://kunsthandwerkermarkt.de