| Company name | Reg. code |
|---|---|
| KKL PROJECTS OÜ | 14986134 |
| KDL PRODUCTS OÜ (former name Liz & Kai Products OÜ) | 17125065 |
| JKL PROJEKT OÜ | 11158649 |
| KVL PROJEKT OÜ (former name Kaevuluuk OÜ) | 11492331 |
| KLK PROJEKT OÜ | 14825738 |
| KL - PROJECT OÜ (former name OÜ KL-PROJECT) | 10310204 |