Please find below a list of PTEC employers that have attended GLPTA business meetings in the past year or are active partners presently.
| Ace Hardware Paint Division |
IMTT-Lemont |
| Advanced Waste Service, Inc |
Indiana Bio Energy, LLC. |
| Aeropres Corp |
INDICOM Electric Company |
| Aires Consulting Group |
INEOS Silicas |
| Akzo Nobel Suface Chemistry |
INEOS Silicas Americas |
| Alcoa Engineered Products |
INEOS Styrenics |
| Ambitech Engineering Corp |
Joliet Equipment Corp |
| Amec Earth Enviromental |
Kaluzny Brothers |
| Amex Construction |
Kemlite Company |
| Apollo Colors |
KM Plant Services |
| Aux Sable Liquid Products |
Linblad Construction |
| Barnett Bates |
Loders Croklaan |
| Best Enviromental |
Luse Holdings |
| Blachford Corp |
Lyondell Chemical |
| Black & Veatch |
Lyondell Chemical Company |
| Bodine Services of Peoria |
Manta Industrial |
| Boelter & Yates |
Marathon Ashland Petroleum |
| BP |
Marathon Oil |
| BP America Inc. |
Marathon Petroleum Company LLC |
| BP Pipelines (North America Inc) |
Matheson Tri-Gas |
| BP Whiting Business Unit |
McCartin Industrial Services |
| Brandenburg Industrial Service |
McIntyre Group |
| Canal Terminal |
Meade Electric Company |
| Carus Chemical Company |
Mechanical Inc |
| Caterpillar |
Merck |
| Chicago Carbon Company |
Midland Cogeneration Venture |
| Chicago Carbon Company |
Midwest Generation-Joliet Station |
| Chicago Manufacturing Center |
Midwest Valve Services |
| Cinergy |
MKD Electric |
| Citgo Petroleum Corp |
National Electrical Contractors |
| CITGO Petroleum Corporation |
Noble REMC |
| Citgo Refining and Petroleum |
Northern Indiana Public Services Co. (NIPSCO) |
| Conoco Phillips |
Onyx Industrial Services |
| Contracors Assoc of Will |
Orica Nitrogen |
| Cook Composities & Polymers |
PACTIV Corporation |
| Corn Products International |
Paragon Medical, Inc. |
| Corn Products US |
Parsons Corporation |
| Crowther Roofing & Sheet Metal |
Patrick Engineering |
| D Construction |
Perrigo Company |
| Desoto |
Pfizer |
| Diageo Global Supply |
PPG Industries |
| Diversified CPC International |
Premcor Refining Group, The |
| Dober Group |
Professional Service Industry |
| Dow Chemical Canada Inc |
Quad Plus |
| Dow Chemical Company, The |
Reichhold, Inc |
| Dow Corning Corporation |
SAPPI Fine Paper |
| Dubak Electrical Maintenance |
SC Johnson |
| DuPont |
SMAR International |
| EA Services |
Smurfit-Stone Container |
| Eagle Services |
Stepan |
| EFCO Corporation |
Stonitsch Construction |
| Eli Lilly |
Sunoco Inc. |
| Exelon Corporation |
Three Rivers Construction Alliance |
| Exelon Nuclear Corporation |
Toyal America |
| Exxon Mobile |
Trihydro Corporation |
| Exxonmobil Joliet Refinery |
United REMC |
| Fastrak Construction Management |
|
| First Midwest Bank |
|
| Flint Hills Resources |
|
| Forbo Adhesives |
|
| Gallagher Asphalt Corp |
|
| GAVC |
|
| General Mills |
|
| Hampden Engineering |
|
| Hayes Mechanical |
|
| Heritage Enviromental Services |
|
