Company

• A. Schulman Inc.

• Acme Hardesty Co.

• Axel Plastics Research Laboratories, Inc.

• BYK

• Chevron Phillips Chemical Company - Polyethylene

• Chevron Phillips Chemical Company, LP

• Croda Polymer Additives

• DOUBLE BOND CHEMICAL IND., CO., LTD.

• Dover Chemical Corporation

• DSM NeoResins, Inc.

• DuPont Titanium Technologies

• Emerald Polymer Additives, LLC

• EMS-CHEMIE (North America) Inc. (Business Unit EMS-GRIVORY)

• Epolin, Inc.

• EQUATE Petrochemical Company

• Formosa Plastics Corp. U.S.A.

• Frank B. Ross, Inc.

• GLS Corporation

• Hoffmann Mineral

• Honeywell Plastics

• IMERYS Performance Minerals North America

• JIANGSU LISIDE CHEMICAL PLANT CO., LTD

• Lixin Engineering Plastics Co.,Ltd.

• Mitsui Chemicals America, Inc.

• Monson Companies, Inc.

• Multibase, a Dow Corning Company

• Neville Chemical Company

• New Particle Chemical Colors Corp.

• Nyacol Nano Technologies, Inc.

• OXEA

• Pan Technology Inc.

• Patcham USA

• Phillips Sumika Polypropylene Company

• Polymer Industries

• Polymer Resources LTD.

• Polyvel Inc.

• Reliance Industries Limited, Swastik Mills Compound

• RTP Company

• SABIC Innovative Plastics

• Sartomer USA, LLC

• Shepherd Color Company

• Silberline Limited

• Sonneborn

• Sundance Products Group, LLC

• Suny Chem

• Total Polymer Vision (Suzhou) Co.,Ltd.

• United Color-Chem