| Business | Phone |
| Instrumentation Technology Inc 2736 N Ridge Rd # 224, Painesville 44077 | (440) 352-2009 |
| M K Optics Inc Painesville 44077 | (440) 350-9966 |
| North Star Planning & Design 10 W Erie St # 201, Painesville 44077 | (440) 942-0041 |
| Oxbow Engineering Inc 10 W Erie St # 201, Painesville 44077 | (440) 352-9559 |
| Thomas Salcius Pe 901 Bank St, Painesville 44077 | (440) 354-3926 |