 | AOS Orwell Limited | port harcourt, rivers, nigeria | 530 | oil and gas | 1981 | |
 | GODDIE CHEMICALS INTERNATIONAL LTD | port harcourt, rivers, nigeria | 46 | oil and gas | 1991 | |
 | Pimo-Mafuta Energies | port harcourt, rivers, nigeria | 81 | oil and gas | 1999 | |
 | Laser Engineering and Resources Consultants Limited | Port Harcourt, rivers, nigeria | 120 | oil and energy | 1990 | |
 | CD Princeton | port-harcourt, rivers, nigeria | 13 | oil and gas | - | |
 | Romangate Project Services Limited | Port Harcourt, rivers, nigeria | 5 | oil and energy | 2004 | |
 | Dewliteltd | portharcourt, rivers, nigeria | 4 | oil and gas | 2022 | |
 | Crownhouse Technologies Limited | Port Harcourt, rivers, nigeria | 15 | oil and energy | 2005 | |
 | iGiet LTD | Port Harcourt, rivers, nigeria | 3 | information technology and services | 2018 | |
 | Havilah & Hills Innovative Systems Ltd | Port Harcourt, rivers, nigeria | 11 | information technology and services | 2005 | |
 | Padypady Interactive Ltd | Port Harcourt, rivers, nigeria | 1 | information technology and services | 2008 | |
 | ZSI ENERGY LIMITED | port harcourt, rivers, nigeria | 2 | oil and gas | 2011 | |
 | Swamp & Shore Oilfield Technical Services | Port Harcourt, rivers, nigeria | 2 | - | 2003 | |
 | axel enterprise systems limited | port harcourt, rivers, nigeria | - | information technology and services | - | |
 | roncho energy services ltd | port harcourt, rivers, nigeria | - | information technology and services | 2007 | |
 | kinetic electromechanic nigeria limited | port harcourt, rivers, nigeria | - | construction | 2006 | |
 | acexpert group (african toolbox) | port harcourt, rivers, nigeria | - | mechanical or industrial engineering | - | |
 | biosystems medical diagnostics | port harcourt, rivers, nigeria | - | hospital and health care | 2014 | |
| accord legal practice | port harcourt, rivers, nigeria | - | legal services | 2013 | |
 | est master construction limited | port harcourt, rivers, nigeria | - | civil engineering | 2000 | |
