| Vendor | Spec | Unit | Price | Currency | Date |
| Sinopec | China national standards | MT | 1097.48 | USD | 20250901 |
| Sinopec | China national standards | MT | 1097.48 | USD | 20250901 |
| Qingdao Shengze Chem | China national standards | MT | 844.71 | USD | 20250831 |
| Qingdao Shengze Chem | China national standards | MT | 844.71 | USD | 20250830 |
| Qingdao Shengze Chem | China national standards | MT | 844.71 | USD | 20250829 |
| Shandong Langchem | China national standards | MT | 971.42 | USD | 20250829 |
| Shandong Langchem | China national standards | MT | 1062.93 | USD | 20250829 |
| Sinopec | China national standards | MT | 1091.09 | USD | 20250829 |
| Qingdao Shengze Chem | China national standards | MT | 844.32 | USD | 20250828 |
| Aite Zhejiang | China national standards | MT | 1013.19 | USD | 20250828 |