| National Oil & Mineral Grease |
| National Oils And Chemicals Company |
| National Oils Operating Company |
| National Oil Storage Company (NOSCO) FZC |
| NATIONAL OIL WELL MAINTENANCE |
| National Oilwell Varco Egypt Free Zone |
| NATIONAL OILWELL -VARCO EGYPT -FREE ZONE L.L.C |
| National Oilwell Varco Muscat |
| National Old City |
| NATIONAL OLYPMIC GEN. TRADING & CONT. CO. WLL |
