Chemical, Refining, Manufacturers and Distributors
- Albemarle Corporation
- Ashland, Inc.
- BASF Corporation
- BiMax, Inc.
- Braskem
- Calgon Carbon
- Covestro
- Coyne Chemical
- Croda, Inc.
- DowDuPont
- Eastman Chemical Company
- Evonik Industries
- Gelest, Inc.
- Lonza, Inc.
- Monroe Energy
- Philadelphia Energy Solutions (PES)
- Pressure Chemical Company
- Quaker Chemical
- Shell Oil Company
- Specialty Chemical Systems, Inc.
- United Chemical Technology
- Williams Pipeline
Engineering and Consulting Firms and Others That Serve the Chemical and Materials Manufacturing Industries
- Buchanan Ingersoll
- Civil & Environmental Consultants
- Eastern Controls
- Geosyntec Consultants
- Kleinfelder
- Langan Engineering & Environmental Services
- O'Brien & Gere
- Tetra Tech
- TTI Environmental, Inc.
- UGI Energy Services, Inc.
- Woodard & Curran
In-Kind Members
- American Chemistry Council
- Post & Schell
- Chemical Association of Pittsburgh
