| Resin Grade | Manufacturer | Category | Trademark |
|---|---|---|---|
| Witcom PE 4L3 | Witcom Engineering Plastics B.V. | PE, Unspecified | Witcom PE |
| Witcom PE 4L1 | Witcom Engineering Plastics B.V. | PE, Unspecified | Witcom PE |
| Witcom PE 2009/271 | Witcom Engineering Plastics B.V. | PE, Unspecified | Witcom PE |