| Company name | Reg. code |
|---|---|
| TUNGTUNG OÜ | 17333705 |
| TUNJUNG SUBROUTO OÜ (former name Paigaldamine OÜ) | 14302555 |
| KENGTUNG OÜ | 16988083 |
| UNGRUNG OÜ | 14119207 |
| GYOKKON BUNGZUNG OÜ (former name Mystery Consult OÜ) | 16780448 |
| HUNGPUNG MAPUM OÜ (former name Risten Teeninduse OÜ) | 14490025 |
| PINGTUNG LIUGUI OÜ kustutatud (former name PlaadiPRO OÜ) | 14362586 |