Ring, Ophthalmic (Flieringa)
17 US facilities across 13 states are recorded as making this. Every entry below says where the claim came from — a federal registry, the company’s own website, or the company itself. Nothing here is paid for or ordered by anything but name.
| Facility | Where | Recorded by |
|---|---|---|
| VOLK OPTICAL INC | MENTOR, OH | federal registry |