- 1st class code GmbH
- Südstrasse 22
- Bülach
- ZH
- 1st unit GmbH
- Konradstrasse 72
- Zürich
- ZH
- 1st2be Inh. B. Steffen
- Feldblumenweg 21
- Zürich
- ZH
- 1stQuad Solutions AG
- Thurgauerstrasse 54
- Zürich
- ZH
- 1stHelp GmbH in Liquidation
- Ringstrasse 16
- Dübendorf
- ZH
- 1st floor gmbh
- Zentralstrasse 153
- Zürich
- ZH
- 1st-finder AG
- Färberstrasse 33
- Zürich
- ZH
- 1st Log AG
- In der Euelwies 22
- Winterthur
- ZH
- 1ST BLOSSOM by Labutiene
- Allmendstrasse 98
- Zürich
- ZH