| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langchem | China national standards | MT | 1113.18 | USD | 20251016 |
| Shandong Langchem | China national standards | MT | 1113.18 | USD | 20251016 |
| Shandong Langchem | China national standards | MT | 1099.09 | USD | 20251016 |
| Shandong Zhiheng | China national standards | MT | 1113.18 | USD | 20251016 |
| Beijing Yanshan Petro | China national standards | MT | 1113.18 | USD | 20251016 |
| Shandong Hongyang Chem | China national standards | MT | 1014.54 | USD | 20251016 |
| Sinopec | China national standards | MT | 993.41 | USD | 20251016 |
| Shandong Aite Chem | China national standards | MT | 1239.52 | USD | 20251015 |
| Shandong Aite Chem | China national standards | MT | 1239.52 | USD | 20251015 |
| Beijing Yanshan Petro | China national standards | MT | 1056.41 | USD | 20251015 |