| اسم الشركة | البريد الالكتروني | الهاتف |
| Muscat Gases Company | info@mctgases.com | 24446030 |
| Muscat Marine & Oil Field Services LLC | muscatmarine@muscatmarine.com | 24496311 |
| National PetroTech | mail@nptechoman.com | 24568906 |
| Northern Minarals | info@nmc-oman.com | 24563343 |
| OIL FIELDS SUPPLY CENTRE LLC | ||
| OIS Oilfield Inspection | 0 | |
| Oman Chlorine | Omancl2@omanchlorine.com | 24695839 |
| Oman Methanol Company | 0 | |
| Oman Oilfields Supply Center | admin@oosc.net | 24602044 |
| Oman Trading International | info@omantrading.com | 24403708 |