| Property | Specification | Typical Value |
| Structure | — | Radial |
| Polystyrene Content，wt% | — | 40 |
| Extended Oil，wt% | 31.0～35.0 | 33 |
| Volatile Matter，wt% | ≤1.0 | 0.65 |
| Ash，wt% | ≤0.20 | 0.08 |
| Tensile Strength，Mpa | ≥14.0 | 22 |
| 300% Modulus，Mpa | ≥1.4 | 2.0 |
| Elongation at Break，% | ≥850 | 1010 |
| Permanent set after break，% | ≤45 | 25 |
| Hardness,shore A | ≥62 | 70 |
| Melt Flow Rate，g/10min（200℃/5kg） | 1.5～4.5 | 2.5 |
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