| Ab Dalsbruks Byggtjänst - Taalintehtaan Rakennuspalvelu Oy | Construction | 1995 |
| Ab Dalsbruks Fabrik Oy | Real estate | 2017 |
| Ab Ingrid av Finland Oy | Wholesale & retail | 2023 |
| Ab Jhonny Sundström Oy | Construction | 1998 |
| Ab Nitramax Oy | Administrative & support | 2018 |
| Ab Sjöbloms Byggtjänst Oy | Construction | 1990 |
| Ab Vänö Alstegen Oy | Wholesale & retail | 2006 |
| Adele Invest Ab | Financial services | 2012 |
| Aktiebolag Holmbergs Four C | Manufacturing | 2013 |
| Allt i El, L&B Viljanen | Construction | 1980 |
| Andelslaget Folkets hus Dalsbruk | Real estate | 1932 |
| BE-Marina Oy Ab | Real estate | 2021 |
| Bernstedts Sjö- och Grävtjänst Ab | Transport & logistics | 2001 |
| Blägä Oy | Wholesale & retail | 2022 |
| Bruks Bilservice Ab | Other services | 2017 |
| Byggnadsfirma B-G Holmström Ab | Construction | 2006 |
| CMT-Finland Oy Ab LTD | Wholesale & retail | 2015 |
| Ceracon Oy Ab | Manufacturing | 1985 |
| Chipper's Pub Ab | Hospitality | 2006 |
| Clear Sky Oy | Professional & scientific | 2014 |
| Cross the Ocean Oy | Professional & scientific | 2025 |
| D-K Control Oy Ab | Professional & scientific | 1990 |
| D-Marin Oy Ab | Manufacturing | 1987 |
| Dalsbruk Smart Solutions Oy | Hospitality | 2025 |
| Dalsbruks Bensin Ab | Wholesale & retail | 1987 |
| Dalsbruks Båtservice Ab | Wholesale & retail | 1987 |
| Dalsbruks Sjötrafik / Taalintehtaan Meriliikenne Ab | Transport & logistics | 2012 |
| Dalshyddan Ab | Hospitality | 2023 |
| EETH Ab Oy | Hospitality | 2010 |
| El-Sähkö Sjöholm Oy Ab | Construction | 1985 |
| Evelia Tilitoimisto II Oy | Professional & scientific | 2023 |
| FNsteel Oy Ab | Manufacturing | 2006 |
| Fastighets Ab Dalsbruks Portside | Real estate | 2012 |
| Fastighets Ab Kimitoöns Bostäder - Kiinteistö Oy Kemiönsaaren Asunnot | Real estate | 1973 |
| Fennotek Oy | Professional & scientific | 1977 |
| Finlandia Sailing Ab Oy | Administrative & support | 1990 |
| Gantti Oy | Information & communication | 2011 |
| Grandita Ab | Professional & scientific | 2011 |
| HK-Constructions Ab | Construction | 2023 |
| Holma Fisk Kb | Agriculture & fishing | 1986 |
| Holma Lax Ab | Agriculture & fishing | 1987 |
| Holma allservice ab | Agriculture & fishing | 2023 |
| House of MotherTree Oy | Education | 2018 |
| Isle Audio Oy | Arts & recreation | 2023 |
| Juha-Pekan Kiinteistösiivous Oy | Administrative & support | 1997 |
| Jungfru Marin Oy Ab | Manufacturing | 1983 |
| Juristbyrå Elmer Sulonen Kb | Professional & scientific | 1993 |
| Kajs Bogser och Sjötrans Ab | Construction | 2023 |
| Kalmos Oy | Hospitality | 2023 |
| Kemiönsaaren Turismin Intressi KTI Oy | Energy | 2021 |
| Kemiönsaaren nuohous oy | Administrative & support | 2025 |
| Kiinteistö Oy Malminselkä | Real estate | 2014 |
| Kiinteistö Oy Onholmen Merimökki | Real estate | 1990 |
| Kimitoöns Industri Ab - Kemiönsaaren Teollisuus Oy | Real estate | 1984 |
| KivaQ OyAb | Professional & scientific | 2002 |
| Kulturhålan Oy Ab | Professional & scientific | 2022 |
| Lempiniitty Oy | Hospitality | 2025 |
| LiRa Ab | Wholesale & retail | 2008 |
| Lindesnes Ab | Agriculture & fishing | 2020 |
| MLJ Johansson Ab Oy | Health & social care | 2015 |
| Mahimoni Oy | Professional & scientific | 2006 |
| Manimani Oy | Professional & scientific | 2014 |
| Outi Mäenpää Oy Acting and Training | Arts & recreation | 2010 |
| Oy 3L TECH Ab | Construction | 2021 |
| Oy Bergtorp Ab | Wholesale & retail | 2011 |
| Oy DB Invest Ab | Professional & scientific | 2022 |
| Oy DB Marina Ab | Manufacturing | 2017 |
| Oy DB Marina Development Ab | Manufacturing | 2018 |
| Oy Malm-tjänster Ab | Construction | 2025 |
| Oy Skutan Ab | Health & social care | 2009 |
| PL8 Smithers Oy | Manufacturing | 2008 |
| ProScan Oy | Information & communication | 1996 |
| Rakennus & Peltityöt J&K Oy | Construction | 2023 |
| Robins Marin Ab Oy | Other services | 2017 |
| S.M. Fagerholm kommanditbolag | Hospitality | 1986 |
| Sail-A-Round Oy | Administrative & support | 1971 |
| Scandicline Oy | Construction | 2012 |
| Servicestation S Eriksson Ab | Wholesale & retail | 2014 |
| Sisustustoimisto Pirkko-Liisa Topelius Ky | Professional & scientific | 2002 |
| Skärgårdsfastigheter Archipelago Ab | Real estate | 2010 |
| Skärifix Romans skärgårdsservice Ab | Administrative & support | 2021 |
| Skärifrakter Bernstedt & Granroth Ab | Transport & logistics | 2025 |
| SteelSound Ab | Arts & recreation | 2012 |
| Stigs Kontor & Foto Öppet bolag | Wholesale & retail | 1983 |
| Struktuuri Oy | Real estate | 1993 |
| SysterMiasCare Ab | Health & social care | 2016 |
| Söljeholmen Marina Ab Oy | Transport & logistics | 2014 |
| Turun Telinepojat Apostolov OY | Construction | 2016 |
| Taalintehtaan Kello ja Hopea avoin yhtiö | Wholesale & retail | 1987 |
| Tekstiili Komppania Oy | Wholesale & retail | 2006 |
| Thomas Grönroos Ab Oy | Administrative & support | 2018 |
| Trans Lindroos Ab Oy | Transport & logistics | 2012 |
| Transport Kim Gustafsson Ab | Transport & logistics | 2026 |
| Uggeldahl Capital Ab | Professional & scientific | 2025 |
| VVS LVI Sundell Ab | Construction | 2003 |
| VVS-Sanvatek Oy Ab | Construction | 1991 |
| Vega Center Ky | Wholesale & retail | 1976 |
| Visuaalinen Pinta Oy | Professional & scientific | 2002 |
| VÄNÖ STUGOR öppet bolag | Real estate | 2006 |
| Wanha Vanilja Oy | Hospitality | 2012 |