CHE109955615c/o Stephan Günthart Gferchstrasse 5, 8603 Schwerzenbach
GSP BAU Partner Inh. Günthart Stephan is a Swiss Einzelfirma based in Schwerzenbach, registered in the commercial register.▍
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Company facts reflect public commercial-register data. Officer and relationship data is derived from published register text. Register data as of 4 July 2026.
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