| Company name | Reg. code |
|---|---|
| STOMATRON OÜ | 12785377 |
| SILMATRON OÜ | 16706239 |
| SAMATRON OÜ (former name Andaman Viimistlus OÜ) | 14836848 |
| SIMATRON METSAMAJANDUSE OÜ | 10899013 |
| SIMATRON SBM OÜ (former name Roosteks Metall OÜ) | 14329761 |
| SUMATRON EST OÜ (former name OÜ Ilmatron) | 11162668 |