| Company name | Reg. code |
|---|---|
| SIREKOM OÜ kustutatud (former name Sirekom UÜ) | 14377352 |
| BUNDUNG TABOKOTO OÜ (former name Sirekom Sisustus OÜ) | 14483092 |
| ACHAB ISABIS OÜ (former name Sirekom Tootmine OÜ) | 14559870 |
| SIRETON OÜ | 10025952 |
| SIREFOR OÜ kustutatud | 11006193 |
| SIRROM OÜ | 14155189 |
| SIREKAR HULGI OÜ | 10610490 |
| SIREKAR PUIT OÜ kustutatud | 10610633 |
| SIREMO INVESTMENT OÜ (former name Siremo Invesment UÜ) | 14976118 |
| MIRECOM OÜ | 14349315 |
| FIRECOM OÜ | 11412266 |
| SANEKOM OÜ | 11027108 |
| SIVEKO OÜ kustutatud | 10244890 |
| VIREKO OÜ kustutatud | 12626526 |
| AREKOM OÜ kustutatud | 16170046 |
| AIREKO OÜ | 12611217 |
| TIRECOM INTERNATIONAL OÜ | 11660604 |
| MAREKOM TRADE OÜ (former name Marekom Trade UÜ) | 16330981 |
| SEKOM OÜ | 14675753 |
| SIVEKO ARENDUS OÜ | 11946358 |
| ARTEGOPRO OÜ (former name Sineko Ehitaja OÜ) | 14785329 |
| NGAPE SINGAUNG OÜ kustutatud (former name REKOM TRANS OÜ) | 11995227 |