Arkema S.A. (ArrMaz Products Inc.)
Evonik Industries AG
ExxonMobil Corporation
Genan Holding AS
HollyFrontier Corporation
Honeywell International Inc. Huntsman Corporation
Ingevity Corporation
Iterchimica Srl
Kao Corporation
Kraton Corporation
LCY Chemical Corporation
McAsphalt Industries Limited
Nouryon Holding B.V. Romonta GmbH
Sasol Limited
Showa Rekisei Industries Co. Ltd. Textile Rubber & Chemical Co. Inc. (TRCC)
The Dow Chemical Company
Westlake Corporation