1. Praxair Surface Technologies Inc.
2. Arkema SA
3. H?gan?s AB
4. H.C. Starck Inc.
5. Wall Colmonoy Corporation
6. Powder Alloy Corporation
7. Saint-Gobain S.A.
8. Carpenter Technology Corporation
9. Durum Verschleiss-Schutz GmbH
10. Montreal Carbide Co. Ltd.