| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yeyang Chem | China national standards | MT | 790.23 | USD | 20251113 |
| Jinan Qi Mat | China national standards | MT | 1030.13 | USD | 20251113 |
| Sinopec | China national standards | MT | 818.46 | USD | 20251113 |
| Sinopec | China national standards | MT | 818.46 | USD | 20251113 |
| Sinopec | China national standards | MT | 818.46 | USD | 20251113 |
| Sinopec | China national standards | MT | 790.23 | USD | 20251113 |
| Shandong Zhiheng | China national standards | MT | 804.35 | USD | 20251113 |
| Shandong Langchem | China national standards | MT | 987.79 | USD | 20251113 |
| Shandong Langchem | China national standards | MT | 1143.02 | USD | 20251113 |
| Shandong Yihe Chem | China national standards | MT | 790.23 | USD | 20251113 |