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Ari Juhani Siponmaa
born 1959
Active roles
4
Companies
4
Business start
2023
Active roles
Greenup Carbon Tech OÜ
Registered
Board member
since 27.10.2025
Mereo Group OÜ
Registered
Shareholder
since 02.09.2023
· 1.31%
Reval Engineering OÜ
Registered
Shareholder
since 02.09.2023
· 10%
Ecocoal OÜ
Registered
Shareholder
since 01.09.2023
· 33.32%
Shared network
AJ
Ari Juhani Siponmaa
Greenup Carbon Te…
Helen Arme