Asahi Kasei Corporation
Ascend Performance Materials
BASF SE
Celanese Corporation
CHIMEI Corporation
Covestro AG
Delrin USA, LLC
Domo Chemicals Services NV
EMS-CHEMIE AG (EMS-GRIVORY)
Envalior GmbH
Formosa Plastics Group
Global Polyacetal Co., Ltd.
INEOS Styrolution Group GmbH
Invista
Keyuan Holding Group Co., Ltd.
Korea Engineering Plastics Co., Ltd.
Kuraray Co., Ltd.
LG Chem Ltd
Liaoning Kingfa Advanced Materials Co., Ltd.
Lotte Chemical Corporation
Mitsubishi Chemical Corporation
Mitsubishi Engineering Plastics Corporation
Petrochina Company Limited
Polyplastics Co., Ltd.
Rohm GmbH
Saudi Basic Industries Corporation (SABIC)
Sinochem Holdings Corporation Ltd.
Styrenix Performance Materials Limited
Sumitomo Chemical Co Ltd
Toray Industries, Inc.
Trinseo LLC
UBE Corporation
Versalis SpA
Yunnan Yuntianhua Co Ltd