The core activity of GNT GROUPE SA encompasses three main areas:
1. **Glazing and Mirroring**: The company offers services in the field of glass processing and finishing, including replacement, built-in furniture, custom-made showers, guardrails, mirrors, special glasses, and all-glass construction.
2. **Solar Protection and Security Films**: GNT GROUPE SA specializes in the sale and installation of protective films for glass, including solar protection films and security films.
3. **Advertising Realizations**: The company offers services in the field of advertising design and production, including anti-reflective/decorative films, interior/exterior signage, vehicle marking, construction site panels, tarpaulins, whiteboards, and Di-Noc.