- BASF SE
- BP PLC
- BVA Oil
- Chemtura Corporation
- Chevron Corporation
- Citgo Petroleum Corporation
- Exxon Mobil Corporation
- Fuchs
- Idemitsu Kosan Co. Ltd
- Isel
- JXTG Nippon Oil & Energy Corporation
- Kluber Lubrication
- Matrix Specialty Lubricants B
- National Refrigerants Inc.
- Parker Hannifin Corp.
- Petronas Lubricants International
- Royal Dutch Shell
- Sonneborn LLC
- TOTAL (Total Specialties USA Inc.)
- Xaerus Lubricants Fluids International
- Tazzetti SpA