| اسم الشركة | البريد الالكتروني | الهاتف |
| oman mix | 0 | |
| Oman Pumps Mfg. & Engineering Services | owpsal@omantel.net.om | 24446098 |
| oman shapoorji | 0 | |
| OMAN SHAPOORJI CONSTRUCTION | oscomct@omantel.net.om | 24590297 |
| Omani Engineering Consultancy Company | admin@oeccs.com | 23292486 |
| orbital | 0 | |
| Powertech Engineering | 0 | |
| Prudent Loss Adjusters | prudent@omantel.net.om | 24700383 |
| Readymix Muscat | 0 | |
| SAFETY technical SERVICES | info@safetyoman.com | 24494206 |