Afton Chemical Corporation
BASF SE
BRB International BV (Petronas Chemicals Group Bhd.)
Chevron Oronite Company LLC
China National Petroleum Corporation
China Petrochemical Corporation (Sinopec)
Clariant AG
Croda International plc
DOG Deutsche Oelfabrik Chemische Erzeugnisse GmbH & Co. KG
Dorf-Ketal Chemicals India Private Limited
Dover Chemical Corporation (ICC Industries Inc.)
DuPont de Nemours Inc. Elco Corporation (Italmatch Chemicals S.P.A.)
Evonik Industries AG
Infineum International Limited
Innospec Inc. Jinzhou Kangtai Lubricant Additives Co. Ltd. (Rianlon Corporation)
King Industries Inc. Lanxess AG (Chemtura Corporation)
Nouryon Holding B.V. Solvay S.A. Stepan Company
The Lubrizol Corporation
The Shepherd Chemical Company
Vanderbilt Chemicals LLC (R.T. Vanderbilt Holding Company Inc.)
Wuxi South Petroleum Additives Co. Ltd. Xinxiang Richful Lube Additive Co. Ltd.