| Company name | Reg. code |
|---|---|
| HI DESIGN OÜ kustutatud | 11216022 |
| HI DESIGN OÜ (former name Helen Ilus Disain OÜ) | 11609320 |
| HIC DESIGN OÜ | 16106048 |
| HINT DESIGN OÜ | 12390070 |
| HINDA DESIGN OÜ | 16254412 |
| HIPOTER DESIGN OÜ | 11996480 |
| HIRUNDO DESIGN OÜ (former name Averal Design UÜ) | 16108900 |
| MAY HILL DESIGNS EESTI OÜ kustutatud | 12778472 |
| LONKAV TUVI OÜ (former name Kai Hinnosaar Design OÜ) | 14201475 |
| TRELLFLEX OÜ (former name Hilfor Group OÜ) | 12078556 |