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| BES Optics Inc. |   | |
| Brighten Optics Ltd. |   | ||
| CRI Inc. - Cambridge Research & Instrumentation, Inc. |   | ||
| Displays & Optical Technologies, Inc. |   | ||
| Laser Optics, Inc. |   | ||
| Innovations in Optics, Inc. |   | ||
| LightPath Technologies, Inc. |   | ||
| Brysen Optical Corporation |   | ||
| Nanjing Saifei Electro-Optics Co., Ltd. |   | ||
| NOEL - Newcastle Optical Engineering Limited |   | ||
| PFG Optics |   | ||
| Plan Optik GmbH |   | ||
| Daheng Optical Instrument Factory |   | ||
| Guild Optical Associates, Inc. 11 Columbia Drive - Amherst, NH 03031 USA |   | ||
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