TQ develops and manufactures at five sites in Germany:
- Headquarters Gut Delling: development, production, client center, administration
- Murnau plant: production, client center
- Peißenberg plant: production, client center
- Wetter an der Ruhr plant: production, switchgear plant, client center
- Chemnitz plant: development
- TQ Technoloy Park Peiting: production (mechanics)
Internationally, TQ is represented at two further locations:
- Fontaines, Switzerland: production
- Shanghai, China: electronics services for companies in Asia and management of procurement in Asia for the TQ plants in Germany