| Business | Phone |
| Champion Optical 11508 Lorain Ave, Cleveland 44111 | (216) 941-8600 |
| Samic Enterprises Inc 4529 Glen Eagle Dr, Cleveland 44141 | (440) 838-4846 |
| J C Manufacturer Co 1644 Hanford Dr, Cleveland 44131 | (216) 642-5599 |
| Lucas Optics Intl 1111 Superior Ave E, Cleveland 44114 | (216) 348-6000 |