| Polybutylene Terephthalate (PBT), Extrusion Grade |
| Barlog Plastics | BASF | - |
| Chang Chun Plastic Co. Ltd. | Chem Polymer | Gromax |
| Intercontinental Polymers, Inc. | Lanxess | Nilit |
| Polymer Resources, LTD | Polymer Technology & Services, LLC (PTS) | Radici Group Plastics |