| Company name | Reg. code |
|---|---|
| PROTRENA OÜ | 11059350 |
| PROTRANS OÜ kustutatud | 14808160 |
| PROTERRA OÜ kustutatud (former name IWENTO OÜ) | 14565792 |
| PROTSENT OÜ | 10874326 |
| PROGREVA OÜ | 17359202 |
| PROTRENDZ OÜ | 16748964 |
| PROTEENE OÜ | 12130067 |
| PROAREA OÜ | 16240597 |
| PRORENT OÜ | 12080381 |
| PROTEJA OÜ | 16588024 |
| PROTRÖN OÜ | 16593249 |
| HR PROTRANS OÜ | 12280973 |
| PROTRANS SERVICE OÜ | 14134744 |
| PROTRANS GRUPP OÜ kustutatud | 11246782 |
| PROTSENT PLUSS OÜ | 12063537 |
| PROTTEN HULGI OÜ (former name Noverol OÜ) | 12979437 |
| PROMENA BALTIC OÜ | 12243073 |
| PROTERA GRUPP OÜ (former name Protera Grupp UÜ) | 12856309 |
| PROTEEN ARENDUS OÜ | 11549775 |
| PROTEA INVEST OÜ | 14216235 |
| BHUIYAN OUEDRAOGO OÜ kustutatud (former name PROTERNO OÜ) | 14199643 |
| LOTRENA OÜ kustutatud | 14089989 |
| POTREBA OÜ | 16350156 |
| ROTERNA OÜ | 16199375 |
| PRIKS F.S.C. OÜ (former name OÜ) | 10232214 |
| FIDCON OÜ (former name Ganza Trade OÜ) | 12315915 |