| Business | Phone |
| Angular Systems Inc 520 S Holland St, Wichita 67209 | (316) 260-7930 |
| Stefan Voegeli & Assoc 349 S Hydraulic St, Wichita 67211 | (316) 264-3061 |
| Morrow Engineering 405 S Holland St, Wichita 67209 | (316) 942-0402 |
| Martin Engineering 9924 E Harry St, Wichita 67207 | (316) 652-9924 |
| Johnson Engineering 330 S Laura St, Wichita 67211 | (316) 264-1953 |