1. A. Ahlström Kiinteistöt Oy

2. Aikawa Fiber Technologies (AFT) Oy

3. Andritz Oy                               

4. ANDRITZ Warkaus Works Oy

5. Sahala Works Oy                                                                             

6. Stora Enso Oyj                                                                                 

7. Sumitomo SHI FW Energia Oy                      

8. Varkauden Vakuutuskassa

9. Metalmix Oy

10. Fin-Terpuu Oy

11. Caverion Suomi Oy

12. NPS Power Oy

13. Nordic Power Service Oy

14. NPS Inspection Oy

15. Elcoline Group Oy

16. Elcoline Industrial Service Oy

17. Elcoline Construction Oy

18. Elcoline Plant Service Oy

19. Elcoline Power Oy

20. SSG Sahala Oy