| Aatu Pekari OY | Administrative & support | 1939 |
| Elias Ruosteinen Oy | Administrative & support | 2024 |
| Fiber-X Finland Oy | Professional & scientific | 2019 |
| HMR Tuotanto Oy | Other services | 2019 |
| Halli ja rakennus Taipale oy | Construction | 2021 |
| Huoltoasema P & J Kouvo Ky | Wholesale & retail | 1985 |
| Inspot Oy | Information & communication | 2026 |
| Jahirel Oy | Real estate | 2021 |
| Jukanen Oy | Construction | 2024 |
| Kaakon Kouru Oy | Construction | 2024 |
| Kadinox Oy | Professional & scientific | 2025 |
| Karelin Oy | Wholesale & retail | 2018 |
| Keskisenpää-Sorvarila vesiosuuskunta | Water & waste | 2000 |
| Kostinsky Oy | Information & communication | 2021 |
| Kotiapu Alma Oy | Administrative & support | 2017 |
| Koulutus- ja konsultointipalvelut Hanna Räsänen Oy | Education | 2025 |
| Kourax oy | Professional & scientific | 2025 |
| Kouvon Kauppa Oy | Wholesale & retail | 2022 |
| Kuhasensaari Club Oy | Hospitality | 2014 |
| Kuljetus J. Kouvo Oy | Transport & logistics | 2008 |
| LLH Motors Oy | Manufacturing | 2026 |
| Leijona Legioona Oy | Construction | 2011 |
| Loonshot Factory Oy | Professional & scientific | 2025 |
| M & S Drilling avoin yhtiö | Construction | 2012 |
| Mekatsu Oy | Administrative & support | 1993 |
| Mikan Monitoimi Ky | Construction | 2006 |
| Misa Oy | Manufacturing | 1967 |
| Netstra Oy | Professional & scientific | 2007 |
| Niemi Wellbeing Oy | Arts & recreation | 2019 |
| Nuorakosken Kehitys Oy | Real estate | 2013 |
| Oy Project Financing Agency Nuorakoski Ltd | Professional & scientific | 2005 |
| Perilla Oy | Hospitality | 2017 |
| Puulahti Oy | Professional & scientific | 2017 |
| SK Kiinteistö- ja saneerauspalvelu oy | Administrative & support | 2013 |
| Saimaan rakennustekniikka Oy | Construction | 2012 |
| Salmentöyryntie 2 Autotallit Oy | Real estate | 1994 |
| Sinsa Oy | Health & social care | 2025 |
| StoneDust Oy | Construction | 2022 |
| Säräpirtti Oy | Hospitality | 1982 |
| Tervapaunu Oy | Real estate | 1993 |
| Theopol Oy | Real estate | 2026 |
| Toukkalan vesiosuuskunta | Water & waste | 2003 |
| Vainikan Sora Oy | Mining & quarrying | 1980 |
| Vankka Talot Ky | Construction | 2012 |
| Waldai Invest Oy | Real estate | 2015 |