1. PDI Inc.
2. GOJO Industries Inc.
3. Spartan Chemical Company Inc.
4. W.W. Grainger Inc.
5. Reckitt Benckiser Group PLC
6. PaxChem Ltd.
7. BODE Chemie GmbH
8. Star Brands Ltd.
9. The 3M Company
10. Procter & Gamble Co.