Electrical and electronics industry
- Alfram Oy
- Audel Oy
- Delta Energy Systems (DES) Oy
- Eaton Power Quality Oy
- Elcoteq Network Oyj
- Electro-Hill Oy
- Ensto Sekko Oy
- Fibox Oy
- Kemppi Oy
- Mica Elektro Oy
- Neoncomp Oy
- Rafi GmbH & Co. KG
- RPC-Group Oy
- Savox Manufacturing Services Oy Ab
- Scanfil Oy
- Schaffner Oy
- Semel Oy
- Sunit Mobile Oy
- VTI Technologies Oy
- Wemi-Electric Oy
Medical and health industry
- Ani Biotech Oy
- Emicaid Oy
- Finnsusp Oy
- GE Healthcare Finland Oy
- Partnertech Oy
- Philips Medical Systems MR Technologies Finland Oy
- Planmeca Oy
- Soredex, GE Healthcare Finland Oy
Machine and component manufacture
- Cimcorp Oy
- Halton Clairia Oy
- KCI Hoists Oy
- Kone Elevators Oy
- Konesko AS
- Kylmäkärki Oy
- Marioff Corporation Oy/Marijot Operations
- Mastsystem Oy
- Raute Precision Oy
- Roxon Oy
- Sandvik Tamrock Oy
- Scott Health & Safety Oy
- Sisu Diesel Oy
- Wallas-Marin Oy
- AGA Oy Ab
- Ahlström Oy
- Checkpoint-Meto Finland Oy
- Esso Oy
- Europak Oy
- Exel Oyj
- Kymen Teollisuushuolto Oy
- Lilako Oy
- Metalpak Oy
- Metos Oy Ab
- Mozo Oy
- Oryx Oy
- Outokumpu Oyj
- Puolustusvoimat
- Soft Diamond Oy
- UPM-Kymmene Oyj