1. Corning Technology Center—Silicon Valley, 680 West Maude Avenue, Sunnyvale, California 94085, United States
2. Corning Scientific Center, Shatelena Street, St. Petersburg 19402, Russia
3. Corning Display Technology, 212, Tangjeong ro, Tangjeong-myeon, Asan-si, Chungcheongnam-do 336-725, Republic of Korea