Seiwa Optical Locations
| Location Name | Address | Contact | |
| United States | Seiwa Optical America Inc. | 3000 Scott Blvd Suite 203 Santa Clara United States, CA 95054 | +1 (408) 844-8008 |
| Japan | Seiwa Optical Manufacturing Co., Ltd.Headquarters | 4-12-17 Yayoi-cho, Nakano-ku Tokyo Japan, 13 164-0013 | +81 03-3383-6301 |
| Germany | Seiwa Optical Europe GmbH | Werrastrasse 6 Frankfurt am Main Germany 60486 | +49 069 74087847 |