| HDPE | LLDPE | LDPE |
| MDPE | Anhydride-Modified Polyethylene |
| A. Schulman, Inc. | Akzo Nobel, Expancel | Asahi Kasei |
| BASF | Buckeye Polymers | ICO Polymers (A Schulman Inc.) |
| Omni Plastics | Premix Thermoplastics Inc. | SCG Chemicals Co. |
| Sibur | Westlake Chemical Corporation |