1. Analytical Sciences Department; Dow Corning Corporation; P.O. Box 994 Midland MI 48686-0994 USA
2. Evonik Nutrition & Care GmbH; Goldschmidtstrasse 100 Essen 45127 Germany
3. Momentive Performance Materials; 260 Hudson River Road Waterford NY 12188 USA
4. Shin-Etsu Chemical Co., Ltd.; 13-1, Isobe 2-chome Annaka-shi Gunma Japan
5. Wacker Chemie AG; Johannes-Hess-Strasse 24 Burghausen 84489 Germany