?- ATI
- Carpenter Technology Corporation
- Catalus Corporation
- COMTEC MFG. Inc.
- Fine-Sinter Co. Ltd
- Fukuda Metal Foil & Powder Company
- HC Stark GmbH
- Hitachi Chemical Co. Ltd
- Hoganas AB
- Horizon Technology Inc.
- Melrose Industries PLC
- Miba AG
- Perry Tool & Research Inc.
- Phoenix Sintered Metals LLC
- Precision Sintered Parts
- Sandvik AB
- Sumitomo Electric Industries Ltd