CHE203405009c/o Willy Sieber Oberdorfstrasse 9, 3662 Seftigen
W. Sieber Beteiligungs GmbH is a Swiss GmbH based in Seftigen, 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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