| A-PRODUCTS Oy | Manufacturing | 2008 |
| Ab AMkon Oy | Professional & scientific | 2023 |
| Ab Fastmännen Oy | Real estate | 1990 |
| Ab Gabriella Oy | Professional & scientific | 1990 |
| Ab K. Lillhannus Oy | Professional & scientific | 1985 |
| Ab Kaizen Ninja Oy | Professional & scientific | 1990 |
| Ab Krs Autolack Oy | Other services | 2016 |
| Ab Linus & Lotta Oy | Professional & scientific | 1992 |
| Ab RAXAinvestigation Oy | Construction | 2019 |
| Ab Rönnlund-Invest Oy | Financial services | 1987 |
| Ab WG-Enter Oy | Administrative & support | 1990 |
| Ab Ålgars Oy | Wholesale & retail | 2008 |
| Amexa Oy | Administrative & support | 2008 |
| Auto- ja Konekorjaamo Niemelä Oy | Other services | 1993 |
| Bokföringsbyrå Ab J & J Oy Tilitoimisto | Professional & scientific | 1989 |
| C&R Machine Oy Ab | Wholesale & retail | 2017 |
| Caust Oy | Financial services | 2023 |
| Cirpaco OY | Construction | 2020 |
| Comars Ab | Administrative & support | 2014 |
| EMP-Combine Oy | Transport & logistics | 1999 |
| Emil.B AB | Manufacturing | 2024 |
| Erai Oy | Health & social care | 2020 |
| Fastighets Ab Hoxelfolk Oy | Real estate | 1982 |
| Finlands Lagerhygien Kb - Suomen Varastohygienia Ky | Administrative & support | 1989 |
| Gasproff Ab | Administrative & support | 2014 |
| Greenwatt Ahvenneva Oy Ab | Energy | 2015 |
| Greenwatt Finance Oy Ab | Energy | 2015 |
| Greenwatt Honkakangas Oy Ab | Energy | 2015 |
| Greenwatt Infra Oy Ab | Energy | 2018 |
| Greenwatt Jakkukallio Oy Ab | Energy | 2015 |
| Greenwatt Ulppaanmäki OyAb | Energy | 2014 |
| Göran Luoto Oy | Professional & scientific | 1985 |
| HH InterTrade Oy Ab | Wholesale & retail | 2017 |
| HL-Kontraktor Ab Oy | Construction | 1993 |
| Haj Wind OY Ab | Energy | 2014 |
| Harriet Capital Oy | Financial services | 2022 |
| Hietikko Motorsport öppet bolag | Arts & recreation | 2012 |
| J.Saloniemi Oy | Agriculture & fishing | 2025 |
| Jewe's Bombona Öppet Bolag | Manufacturing | 2008 |
| JP Marinservice Ab | Manufacturing | 2011 |
| JRJ Service öppet bolag | Agriculture & fishing | 2008 |
| Jukka Myllyniemi Oy | Construction | 1992 |
| Kaj Mitts & Co | Construction | 1984 |
| Kb Bestlight Ky | Wholesale & retail | 1992 |
| Kb JHE-Consulting Ky | Professional & scientific | 1993 |
| Kb M.Holmlund Ky | Administrative & support | 2008 |
| Kb Norr-Fast Ky | Real estate | 1982 |
| Kb Roger Snickars Ky | Construction | 1986 |
| Kb T. Södergård Ky | Wholesale & retail | 1987 |
| Kb Trans Silander Ky | Transport & logistics | 1990 |
| Kb Transportaffär - Kuljetusliike Lillträsk Ky | Transport & logistics | 1983 |
| Kb Åstrands Bageri - Leipomo Ky | Manufacturing | 1980 |
| Kiinteistö Oy Kehätie 26 | Real estate | 1998 |
| Kiinteistö Oy Sulkavan Hui-Lai-Lee | Real estate | 1992 |
| Kommanditbolaget KS Consulting Kommandiittiyhtiö | Professional & scientific | 2008 |
| Kristinestad Solpark Ab | Energy | 2022 |
| Kristrans Oy | Transport & logistics | 1997 |
| Kröninkankaan Tuulivoima Oy Ab | Energy | 2023 |
| Kuljetusliike Sampo Prosi Oy | Transport & logistics | 1982 |
| Ky Black Pepper Hotel Kb | | 1990 |
| Ky Jancan Grilli - Jancas Grill Kb | Hospitality | 1992 |
| Ky Mypot Kb | Manufacturing | 2011 |
| Ky West Oil Kb | Wholesale & retail | 1990 |
| Kylservice Kylmähuolto Lillhannus Ab Oy | Other services | 2023 |
| Lappfjärd Vattenandelslag | Water & waste | 1948 |
| Lappfjärds Bilservice Öppet bolag - Lapväärtin Autohuolto Avoin yhtiö | Wholesale & retail | 1987 |
| Lappfjärds Blomster- och begravningsservice Öppet bolag - Lapväärtin Kukka ja hautauspalvelu Avoin yhtiö | Other services | 1993 |
| Lappfjärds Rör Kb | Construction | 1984 |
| Lapväärtin K-Center Ky - Lappfjärds K-Center Kb | Wholesale & retail | 1981 |
| Lehtituisku Oy | Hospitality | 2021 |
| Lindbäcks Trä Öppet bolag | Manufacturing | 1994 |
| Länsirannikon siivous ky | Wholesale & retail | 1990 |
| M&M målerifix Öb | Construction | 2015 |
| Maatila A & N Oy | Agriculture & fishing | 2009 |
| Maatila Nummela&Lehtonen Oy | Agriculture & fishing | 2024 |
| Matsonbeast Oy | Information & communication | 2021 |
| Mosspott Service Ab | Other services | 2005 |
| Muovi- ja Rakennustyöt Niiranen Oy | Construction | 2017 |
| NP Vonnela Oy | Hospitality | 2013 |
| Ninron Oy Ab | Administrative & support | 2014 |
| Nyby Solpark Ab | Energy | 2022 |
| Nyos Oy | Wholesale & retail | 2009 |
| OY RS Port AB | Real estate | 2008 |
| Onestar Oy Ab | Administrative & support | 1993 |
| Onestar Services Oy Ab | Manufacturing | 2007 |
| Oy Ab Cahera Ltd | Transport & logistics | 1993 |
| Oy Aintob Ab | Administrative & support | 2018 |
| Oy Askar Ab | Administrative & support | 2018 |
| Oy Basav Ab | Administrative & support | 2018 |
| Oy Greenwatt Ab | Energy | 2013 |
| Oy HTS-peruna / HTS-potatis Ab | Wholesale & retail | 1988 |
| Oy KEN-DA Ab | Transport & logistics | 1983 |
| Oy KRS Potato-Products Ab | Wholesale & retail | 1988 |
| Oy Krs Automation Service Ab | Construction | 1998 |
| Oy Krs Business Ab | Hospitality | 1993 |
| Oy Krs Kri-Po Ab | Manufacturing | 1996 |
| Oy Krs Trans Ab | Wholesale & retail | 2009 |
| Oy Krs-Wood Ab | Manufacturing | 1994 |
| Oy LANA-Team Ab | Real estate | 2020 |
| Oy LVI Lundell VVS Ab | Construction | 1964 |