- KS electro engineering GmbH
- Vella
- GR
- KS-Management AG
- Eulenburg
- Parsonz
- GR
- KS electro engineering GmbH
- Curtgin Risch 81
- Vella
- GR
- KSC Investment GmbH
- Via da Bernina 4
- Pontresina
- GR
- KSD Productions AG
- Weststrasse 7
- Landquart
- GR
- KSG Kaderschule Graubünden AG in Liquidation
- Tittwiesenstrasse 61
- Chur
- GR
- KSD Productions AG in Liquidation
- Weststrasse 7
- Zizers
- GR
- KSE Stalder engineering
- Wiesentalstrasse 174
- Chur
- GR
- KSC Chur
- Chur
- GR
- KSR Bau GmbH
- Usserfäldstrasse 9
- Grüsch
- GR
- KSD Consulting GmbH
- Emmaweg 4
- Chur
- GR