| Name | : Io-sys oy |
| Business Number | : 0925431-4 |
| Category | : Limited Company |
| Primary language | : Finnish |
| Place of taxation | : Oulu  | Date of registration | : 21/07/1993 |
| Activity | : Manufacture of electronic valves and tubes and other electronic components |
| Alias | : Io-Sys Oy, Oulun Viherkivi |