| Company | Category | Area | Address | Web | Contact person | |
| ENGINERING TECHNICAL MGT SERVI | Management Consulting Services | Maryland | 12304 DANCREST DR, CLARKSBURG, Montgomery, Maryland, 20871-9204, USA | - | - | Chris Denham |
| ENGINERRING GROUP | Business Services | Illinois | 150 S WACKER DR FL 28, CHICAGO, Cook, Illinois, 60606-4221, USA | - | - | Kirk Lecack |
| ENGINERRING PLAN & BLDNG DEPT | Government Offices-City, Villa | Ohio | 540 LAIRD AVE SE, WARREN, Trumbull, Ohio, 44484-4231, USA | - | - | - |
