| Resin Grade | Manufacturer | Category | Trademark |
|---|---|---|---|
| Tuffalloy™ 4275 | Hapco Inc. | TP, Unspecified | Tuffalloy™ |
| Tuffalloy™ 4274 | Hapco Inc. | TP, Unspecified | Tuffalloy™ |
| Tuffalloy™ 4272 | Hapco Inc. | TP, Unspecified | Tuffalloy™ |
| Tuffalloy™ 4270 | Hapco Inc. | TP, Unspecified | Tuffalloy™ |