| Company name | Reg. code |
|---|---|
| HETSON OÜ | 16441737 |
| HETKON OÜ | 14413496 |
| HETONG OÜ kustutatud | 14077822 |
| HETOK OÜ | 17005272 |
| JETSON OÜ | 11627564 |
| METSON OÜ | 14374081 |
| HENSON OÜ | 14333403 |
| EHTSON OÜ | 17232542 |
| HERTSON OÜ | 10325387 |
| PETSON OÜ | 12220149 |
| HETMAN INVEST OÜ kustutatud | 10782682 |
| HETMAN GROUP OÜ | 16954492 |
| HETA MANAGEMENT OÜ (former name Hetacon Management OÜ) | 14587606 |
| HETAN CARGO OÜ kustutatud | 12531530 |
| HETSA EHITUS OÜ | 17188433 |
| HATSON PRODUCTIONS OÜ | 17302567 |
| HENSON SERVICE OÜ kustutatud | 10458734 |
| HENSON DISAIN OÜ | 10490399 |
| HEXSON INVEST OÜ kustutatud | 12899299 |
| HENSON INVEST OÜ | 16399102 |
| HETCOIN INTERNATIONAL EXCHANGE OÜ | 14720583 |
| BETMON OÜ | 12084769 |
| BETTON OÜ | 16515918 |
| AESTON OÜ | 12052628 |
| BETOON OÜ | 12889869 |
| HEIXON OÜ kustutatud (former name Kärtshäts OÜ) | 14196811 |
| HEDRON OÜ | 14678183 |
| HEASÕNA OÜ | 17482463 |
| ARTSON OÜ | 12940151 |
| HEASION OÜ kustutatud | 16011879 |
| HEATON OÜ kustutatud | 14362793 |
| HEATCON OÜ | 14383654 |
| HEIRON OÜ | 14112553 |
| 28 BETOON OÜ kustutatud | 12251115 |
| AEKSON OÜ | 10793467 |
| BETOON24 OÜ | 17202311 |
| BETZON OÜ | 17340007 |
| DESTON OÜ | 16813923 |
| HETS TOIDUTUBA OÜ | 14323273 |
| HETO TEENUSED OÜ | 14710314 |
| HETO CONSULT OÜ | 11412421 |
| MLD BETOON OÜ | 17098500 |
| ECO-BETOON OÜ | 16470759 |
| RMV BETOON OÜ (former name BETONEST OÜ) | 14488637 |
| KM BETOON OÜ | 14496737 |
| OTEPÄÄ BETOON OÜ | 11736017 |
| HIIU BETOON OÜ | 14226653 |
| KÄRDLA BETOON OÜ | 14677686 |
| KEILA BETOON OÜ | 10075430 |
| SAARE-BETOON OÜ | 12625863 |