| Company name | Reg. code |
|---|---|
| ELK HOLDING OÜ kustutatud | 14866306 |
| ELKO HOLDING OÜ kustutatud | 12623864 |
| ELKOMER HOLDING OÜ kustutatud (former name ELERO Holding OÜ) | 10639358 |
| ELF HOLDING OÜ kustutatud | 12454249 |
| ELA HOLDINGS OÜ | 16804155 |
| ELC HOLDINGS OÜ | 11119371 |
| ALCMENE OÜ (former name EK Holding OÜ) | 10360001 |
| STARTECH SERVICE OÜ kustutatud (former name LK-Welding OÜ) | 14085661 |
| A1 QUALITY PRODUCTION OÜ (former name EL ESTATE OÜ) | 12897863 |