| Company name | Reg. code |
|---|---|
| P-SYSTEM OÜ kustutatud | 11465104 |
| S & P GLOBAL SYSTEMS OÜ | 16610679 |
| M.P. SYSTEMS OÜ | 14716587 |
| E.P. SYSTEMS OÜ | 11017044 |
| V.P ELECTRICAL SYSTEMS OÜ kustutatud | 16627511 |
| PK SYSTEMS OÜ | 16081064 |
| PMA SYSTEM OÜ | 10184521 |
| SYSTEM PLUS OÜ | 11189517 |
| PSP SYSTEMS OÜ kustutatud | 11007732 |
| PANEL SYSTEM OÜ kustutatud | 11299545 |
| PAINT SYSTEM OÜ | 12043517 |
| PAYNAX SYSTEM OÜ kustutatud | 16461708 |
| PACTO SYSTEMS OÜ kustutatud | 14152245 |
| POLAR SYSTEMS OÜ kustutatud | 10731153 |
| VR PUR SYSTEMS OÜ | 11934556 |
| POWER SYSTEMS OÜ | 12341930 |
| PAUKA SYSTEMS OÜ | 12900559 |
| KVK PRO SYSTEMS OÜ | 12073464 |
| AM POWER SYSTEM OÜ | 14574271 |
| PILLOW SYSTEMS OÜ | 17079661 |
| POSTAL SYSTEMS OÜ | 14971894 |
| PARKER SYSTEMS OÜ kustutatud | 12926955 |
| PLUTON SYSTEMS OÜ | 11357426 |
| PASSER SYSTEMS OÜ | 17345832 |
| PREMIUM SYSTEMS OÜ kustutatud | 11192764 |
| PRIMERO SYSTEMS OÜ | 11193663 |
| PREMIUM SYSTEMS OÜ (former name Premium Systems UÜ) | 14921293 |
| PROTEAM SYSTEMS OÜ | 11644700 |
| PPU SYSTEM HOUSE OÜ kustutatud | 12604737 |
| PAYMENT SYSTEMS OÜ kustutatud | 12747164 |
| PLUSCOM SYSTEMS OÜ kustutatud | 11528299 |
| PLUSSEN SYSTEMS OÜ | 14005024 |
| PROMARK SYSTEMS OÜ kustutatud | 11307026 |
| PRIMEAREA SYSTEM OÜ kustutatud | 14234730 |
| PAKTRADE SYSTEMS OÜ kustutatud | 12123251 |
| POLARNET SYSTEMS OÜ kustutatud | 11152196 |
| PROVABLE SYSTEMS OÜ kustutatud | 11231599 |
| BMG POWER SYSTEMS OÜ (former name BMG Diesel Center OÜ) | 11725966 |
| PRIORITY SYSTEMS OÜ | 16922925 |
| PROBUILD SYSTEMS OÜ | 14863696 |
| CEDARS PV SYSTEMS OÜ | 17440128 |
| SWEDMAX OÜ kustutatud (former name Proflex Systems OÜ) | 14263720 |
| EURO PETROL SYSTEM OÜ kustutatud | 12007415 |
| PARTITION SYSTEMS OÜ kustutatud | 12381817 |
| PINEAPPLE SYSTEMS OÜ | 14674297 |
| PURE SPACE SYSTEMS OÜ | 16143776 |
| B.EST PIPE SYSTEMS OÜ kustutatud | 12512060 |
| COMPOTEXA OÜ kustutatud (former name Sgb systems OÜ) | 14444108 |
| PROCESSING SYSTEMS OÜ kustutatud | 16190422 |
| FOCUS POINT SYSTEMS OÜ (former name OÜ Focuspoint) | 11215258 |