| NR | Natural rubber |
| TD | Thioacetamide derivative |
| TAA | Thioacetic acid |
| ETU | Thioketone accelerators |
| 3-Hp | 3-Hydroxypyridine |
| Mv | Mooney viscosity |
| ML | The minimum torque |
| MH | The highest maximum torque |
| phr | Parts per hundred rubber |
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