| اسم الشركة | البريد الالكتروني | الهاتف |
| Gulf Petrochemical Services & Trading | 0 | |
| Linde Corrotech International LLC | an@lindecorrotech.com | |
| Majan International Petroleum Services | 0 | |
| Maqshan Oil & Gas Services | 0 | |
| MB Holding Company | mboman@mbholdingco.com | 24580580 |
| MedEnergy | 24705830 | |
| Muscat Gases Company | info@mctgases.com | 24446030 |
| Northern Minarals | info@nmc-oman.com | 24563343 |
| Oman Chlorine | Omancl2@omanchlorine.com | 24695839 |
| Oman Methanol Company | 0 |