| Resin Grade | Manufacturer | Category | Trademark |
|---|---|---|---|
| STYRON™ 438 | Trinseo | PS (HIPS) | STYRON™ |
| STYRON™ 470 | Trinseo | PS (HIPS) | STYRON™ |
| STYRON™ 484 | Americas Styrenics LLC | PS (HIPS) | STYRON™ |
| STYRON™ 634 | Trinseo | PS (GPPS) | STYRON™ |
| STYRON™ 6500 | Trinseo | PS (IRPS) | STYRON™ |
| STYRON™ 656D | Trinseo | PS (GPPS) | STYRON™ |
| STYRON™ 649D | Americas Styrenics LLC | PS (GPPS) | STYRON™ |
| STYRON™ 610 | Americas Styrenics LLC | PS (GPPS) | STYRON™ |
| STYRON™ 487R | Americas Styrenics LLC | PS (HIPS) | STYRON™ |
| STYRON™ 686E | Trinseo | PS (GPPS) | STYRON™ |
| STYRON™ 666D | Americas Styrenics LLC | PS (GPPS) | STYRON™ |
| STYRON™ 660 | Trinseo | PS (GPPS) | STYRON™ |
| STYRON™ 685D | Trinseo | PS (GPPS) | STYRON™ |
| STYRON™ 685DL | Americas Styrenics LLC | PS (GPPS) | STYRON™ |
| STYRON™ 680A | Trinseo | PS (GPPS) | STYRON™ |
| STYRON™ 670 | Trinseo | PS (GPPS) | STYRON™ |
| STYRON™ 675 | Americas Styrenics LLC | PS (GPPS) | STYRON™ |
| STYRON™ 668 | Americas Styrenics LLC | PS (GPPS) | STYRON™ |
| STYRON™ 666H | Trinseo | PS (GPPS) | STYRON™ |
| STYRON™ 636 BT | Trinseo | PS (GPPS) | STYRON™ |