1. Bio-Rad Laboratories Inc., Life Science Group, 6000 James Watson Drive, Hercules, CA 94547, United States
2. Bio-Rad Laboratories GmbH, Life Science Group, Heidemannstr. 164, 80939 Munich, Germany
3. Bio-Rad Laboratories (Shanghai) Ltd., 1302/F GIE Tower 403, Huanshi Road East, Guangzhou 510095, China