| Business | Phone |
| Hampton Research & Engineering 3108 N Santa Fe Ave, Oklahoma City 73118 | (405) 232-5103 |
| Harris Discount Supply Ltd 7506 Melrose Ln # A, Oklahoma City 73127 | (405) 440-2229 |
| Jesco Products Inc 304 N Meridian Ave # B, Oklahoma City 73107 | (405) 943-1721 |