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Jan Hendrik Helmchen
CHE-352.654.920
⎘
Jan Hendrik Helmchen
Active
Sole proprietorship
📍 8003 Zürich
ZH
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UID
CHE-352.654.920
Address
Weststrasse 136
8003 Zürich
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Sole proprietorship
Updated: 16.05.2026 05:46 ·
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